From 89d6af078aa05005b76aa75cd50960493968ff42 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Sun, 26 Feb 2017 11:32:57 +0800
Subject: [PATCH 01/11] 1.3.4.5.6

---
 Goldbach.cpp       |  54 ++++++++++++
 Running Letter.cpp |  29 +++++++
 diu fan tu.cpp     |  18 ++++
 prime.cpp          | 202 +++++++++++++++++++++++++++++++++++++++++++++
 shui xian hua.cpp  |  12 +++
 5 files changed, 315 insertions(+)
 create mode 100644 Goldbach.cpp
 create mode 100644 Running Letter.cpp
 create mode 100644 diu fan tu.cpp
 create mode 100644 prime.cpp
 create mode 100644 shui xian hua.cpp

diff --git a/Goldbach.cpp b/Goldbach.cpp
new file mode 100644
index 00000000..29aab0f8
--- /dev/null
+++ b/Goldbach.cpp
@@ -0,0 +1,54 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+	int a[25];        //打表
+	bool Judge = 0;
+	a[0] = 2;
+	a[1] = 3;
+	a[2] = 5;
+	a[3] = 7;
+	a[4] = 11;
+	a[5] = 13;
+	a[6] = 17;
+	a[7] = 19;
+	a[8] = 23;
+	a[9] = 29;
+	a[10] = 31;
+	a[11] = 37;
+	a[12] = 41;
+	a[13] = 43;
+	a[14] = 47;
+	a[15] = 53;
+	a[16] = 59;
+	a[17] = 61;
+	a[18] = 67;
+	a[19] = 71;
+	a[20] = 73;
+	a[21] = 79;
+	a[22] = 83;
+	a[23] = 89;
+	a[24] = 97;
+	for (int i = 6; i <=100; i+=2)
+	{
+		for (int j = 0; j < 25; j++)
+		{
+			for (int k = 0; k < 25; k++)
+			{
+				if (a[j] + a[k] == i)
+				{
+					Judge = 1;
+					break;
+				}
+			}
+			if (Judge==1)
+			{
+				cout << i << "满足哥德巴赫猜想" << endl;
+				break;
+			}
+		}
+		Judge = 0;
+	}
+    return 0;
+}
+
diff --git a/Running Letter.cpp b/Running Letter.cpp
new file mode 100644
index 00000000..42b549c1
--- /dev/null
+++ b/Running Letter.cpp	
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <windows.h>
+int main(int argc, char** argv)
+ {
+ 	while(1)
+ 	{
+	 
+		printf("R");
+	 	Sleep(30);
+		system("cls");
+		for(int i=0;i<79;i++)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+		for(int i=79;i>=0;i--)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+	}
+	return 0;
+}
diff --git a/diu fan tu.cpp b/diu fan tu.cpp
new file mode 100644
index 00000000..21145fdb
--- /dev/null
+++ b/diu fan tu.cpp	
@@ -0,0 +1,18 @@
+#include <iostream>
+using namespace std;
+int main(int argc, char** argv)
+{
+    int FatherAge=0;
+	for(double i=1.0;i<100;i++)           //儿子年龄 
+	{
+		for(double j=1;j<200;j++)       //父亲年龄 
+		{
+			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
+			{
+				FatherAge=j;
+			}
+		}
+	}
+	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
+	return 0;
+}
diff --git a/prime.cpp b/prime.cpp
new file mode 100644
index 00000000..417b3900
--- /dev/null
+++ b/prime.cpp
@@ -0,0 +1,202 @@
+#include <iostream>
+/*bool pd(int n)
+{
+	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
+	{
+		if(n%i==0)
+		return false;
+	}
+	return true;
+}
+
+
+int main(int argc, char** argv) 
+{
+	int a[1000];
+	int tot=0;
+	printf("a[0]=2\n");
+	for(int i=3;i<1000;i++)
+	{
+		if(pd(i))
+		{
+			a[tot++]=i;
+			printf("a[%d]=%d;\n",tot,i);
+		}
+	}
+	return 0;
+}  */
+int main()
+{
+	int a[500];
+	a[0]=2;
+	a[1]=3;
+	a[2]=5;
+	a[3]=7;
+	a[4]=11;
+	a[5]=13;
+	a[6]=17;
+	a[7]=19;
+	a[8]=23;
+	a[9]=29;
+	a[10]=31;
+	a[11]=37;
+	a[12]=41;
+	a[13]=43;
+	a[14]=47;
+	a[15]=53;
+	a[16]=59;
+	a[17]=61;
+	a[18]=67;
+	a[19]=71;
+	a[20]=73;
+	a[21]=79;
+	a[22]=83;
+	a[23]=89;
+	a[24]=97;
+	a[25]=101;
+	a[26]=103;
+	a[27]=107;
+	a[28]=109;
+	a[29]=113;
+	a[30]=127;
+	a[31]=131;
+	a[32]=137;
+	a[33]=139;
+	a[34]=149;
+	a[35]=151;
+	a[36]=157;
+	a[37]=163;
+	a[38]=167;
+	a[39]=173;
+	a[40]=179;
+	a[41]=181;
+	a[42]=191;
+	a[43]=193;
+	a[44]=197;
+	a[45]=199;
+	a[46]=211;
+	a[47]=223;
+	a[48]=227;
+	a[49]=229;
+	a[50]=233;
+	a[51]=239;
+	a[52]=241;
+	a[53]=251;
+	a[54]=257;
+	a[55]=263;
+	a[56]=269;
+	a[57]=271;
+	a[58]=277;
+	a[59]=281;
+	a[60]=283;
+	a[61]=293;
+	a[62]=307;
+	a[63]=311;
+	a[64]=313;
+	a[65]=317;
+	a[66]=331;
+	a[67]=337;
+	a[68]=347;
+	a[69]=349;
+	a[70]=353;
+	a[71]=359;
+	a[72]=367;
+	a[73]=373;
+	a[74]=379;
+	a[75]=383;
+	a[76]=389;
+	a[77]=397;
+	a[78]=401;
+	a[79]=409;
+	a[80]=419;
+	a[81]=421;
+	a[82]=431;
+	a[83]=433;
+	a[84]=439;
+	a[85]=443;
+	a[86]=449;
+	a[87]=457;
+	a[88]=461;
+	a[89]=463;
+	a[90]=467;
+	a[91]=479;
+	a[92]=487;
+	a[93]=491;
+	a[94]=499;
+	a[95]=503;
+	a[96]=509;
+	a[97]=521;
+	a[98]=523;
+	a[99]=541;
+	a[100]=547;
+	a[101]=557;
+	a[102]=563;
+	a[103]=569;
+	a[104]=571;
+	a[105]=577;
+	a[106]=587;
+	a[107]=593;
+	a[108]=599;
+	a[109]=601;
+	a[110]=607;
+	a[111]=613;
+	a[112]=617;
+	a[113]=619;
+	a[114]=631;
+	a[115]=641;
+	a[116]=643;
+	a[117]=647;
+	a[118]=653;
+	a[119]=659;
+	a[120]=661;
+	a[121]=673;
+	a[122]=677;
+	a[123]=683;
+	a[124]=691;
+	a[125]=701;
+	a[126]=709;
+	a[127]=719;
+	a[128]=727;
+	a[129]=733;
+	a[130]=739;
+	a[131]=743;
+	a[132]=751;
+	a[133]=757;
+	a[134]=761;
+	a[135]=769;
+	a[136]=773;
+	a[137]=787;
+	a[138]=797;
+	a[139]=809;
+	a[140]=811;
+	a[141]=821;
+	a[142]=823;
+	a[143]=827;
+	a[144]=829;
+	a[145]=839;
+	a[146]=853;
+	a[147]=857;
+	a[148]=859;
+	a[149]=863;
+	a[150]=877;
+	a[151]=881;
+	a[152]=883;
+	a[153]=887;
+	a[154]=907;
+	a[155]=911;
+	a[156]=919;
+	a[157]=929;
+	a[158]=937;
+	a[159]=941;
+	a[160]=947;
+	a[161]=953;
+	a[162]=967;
+	a[163]=971;
+	a[164]=977;
+	a[165]=983;
+	a[166]=991;
+	a[167]=997;
+	for(int i=0;i<168;i++)
+		printf("%d ",a[i]);
+	return 0;
+}
diff --git a/shui xian hua.cpp b/shui xian hua.cpp
new file mode 100644
index 00000000..eb706454
--- /dev/null
+++ b/shui xian hua.cpp	
@@ -0,0 +1,12 @@
+#include <iostream>
+#include <math.h>
+using namespace std;
+int main(int argc, char** argv) 
+{
+	for(int i=100;i<1000;i++)
+	{
+		if((pow(i/100,3)+pow(i%100/10,3)+pow(i%100%10,3)==i))
+		cout<<i<<"为水仙花数"<<endl;
+	}		
+	return 0;
+}

From 21f8a5c343e77372a8d774702fc9279d9a162254 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Sun, 26 Feb 2017 14:17:20 +0800
Subject: [PATCH 02/11] Revert "1.3.4.5.6"

This reverts commit 89d6af078aa05005b76aa75cd50960493968ff42.
---
 Goldbach.cpp       |  54 ------------
 Running Letter.cpp |  29 -------
 diu fan tu.cpp     |  18 ----
 prime.cpp          | 202 ---------------------------------------------
 shui xian hua.cpp  |  12 ---
 5 files changed, 315 deletions(-)
 delete mode 100644 Goldbach.cpp
 delete mode 100644 Running Letter.cpp
 delete mode 100644 diu fan tu.cpp
 delete mode 100644 prime.cpp
 delete mode 100644 shui xian hua.cpp

diff --git a/Goldbach.cpp b/Goldbach.cpp
deleted file mode 100644
index 29aab0f8..00000000
--- a/Goldbach.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-#include <iostream>
-using namespace std;
-int main()
-{
-	int a[25];        //打表
-	bool Judge = 0;
-	a[0] = 2;
-	a[1] = 3;
-	a[2] = 5;
-	a[3] = 7;
-	a[4] = 11;
-	a[5] = 13;
-	a[6] = 17;
-	a[7] = 19;
-	a[8] = 23;
-	a[9] = 29;
-	a[10] = 31;
-	a[11] = 37;
-	a[12] = 41;
-	a[13] = 43;
-	a[14] = 47;
-	a[15] = 53;
-	a[16] = 59;
-	a[17] = 61;
-	a[18] = 67;
-	a[19] = 71;
-	a[20] = 73;
-	a[21] = 79;
-	a[22] = 83;
-	a[23] = 89;
-	a[24] = 97;
-	for (int i = 6; i <=100; i+=2)
-	{
-		for (int j = 0; j < 25; j++)
-		{
-			for (int k = 0; k < 25; k++)
-			{
-				if (a[j] + a[k] == i)
-				{
-					Judge = 1;
-					break;
-				}
-			}
-			if (Judge==1)
-			{
-				cout << i << "满足哥德巴赫猜想" << endl;
-				break;
-			}
-		}
-		Judge = 0;
-	}
-    return 0;
-}
-
diff --git a/Running Letter.cpp b/Running Letter.cpp
deleted file mode 100644
index 42b549c1..00000000
--- a/Running Letter.cpp	
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <iostream>
-#include <windows.h>
-int main(int argc, char** argv)
- {
- 	while(1)
- 	{
-	 
-		printf("R");
-	 	Sleep(30);
-		system("cls");
-		for(int i=0;i<79;i++)
-		{
-			for(int j=0;j<i;j++)
-				printf(" ");
-			printf("R");
-			Sleep(30);
-			system("cls");
-		}
-		for(int i=79;i>=0;i--)
-		{
-			for(int j=0;j<i;j++)
-				printf(" ");
-			printf("R");
-			Sleep(30);
-			system("cls");
-		}
-	}
-	return 0;
-}
diff --git a/diu fan tu.cpp b/diu fan tu.cpp
deleted file mode 100644
index 21145fdb..00000000
--- a/diu fan tu.cpp	
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <iostream>
-using namespace std;
-int main(int argc, char** argv)
-{
-    int FatherAge=0;
-	for(double i=1.0;i<100;i++)           //儿子年龄 
-	{
-		for(double j=1;j<200;j++)       //父亲年龄 
-		{
-			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
-			{
-				FatherAge=j;
-			}
-		}
-	}
-	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
-	return 0;
-}
diff --git a/prime.cpp b/prime.cpp
deleted file mode 100644
index 417b3900..00000000
--- a/prime.cpp
+++ /dev/null
@@ -1,202 +0,0 @@
-#include <iostream>
-/*bool pd(int n)
-{
-	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
-	{
-		if(n%i==0)
-		return false;
-	}
-	return true;
-}
-
-
-int main(int argc, char** argv) 
-{
-	int a[1000];
-	int tot=0;
-	printf("a[0]=2\n");
-	for(int i=3;i<1000;i++)
-	{
-		if(pd(i))
-		{
-			a[tot++]=i;
-			printf("a[%d]=%d;\n",tot,i);
-		}
-	}
-	return 0;
-}  */
-int main()
-{
-	int a[500];
-	a[0]=2;
-	a[1]=3;
-	a[2]=5;
-	a[3]=7;
-	a[4]=11;
-	a[5]=13;
-	a[6]=17;
-	a[7]=19;
-	a[8]=23;
-	a[9]=29;
-	a[10]=31;
-	a[11]=37;
-	a[12]=41;
-	a[13]=43;
-	a[14]=47;
-	a[15]=53;
-	a[16]=59;
-	a[17]=61;
-	a[18]=67;
-	a[19]=71;
-	a[20]=73;
-	a[21]=79;
-	a[22]=83;
-	a[23]=89;
-	a[24]=97;
-	a[25]=101;
-	a[26]=103;
-	a[27]=107;
-	a[28]=109;
-	a[29]=113;
-	a[30]=127;
-	a[31]=131;
-	a[32]=137;
-	a[33]=139;
-	a[34]=149;
-	a[35]=151;
-	a[36]=157;
-	a[37]=163;
-	a[38]=167;
-	a[39]=173;
-	a[40]=179;
-	a[41]=181;
-	a[42]=191;
-	a[43]=193;
-	a[44]=197;
-	a[45]=199;
-	a[46]=211;
-	a[47]=223;
-	a[48]=227;
-	a[49]=229;
-	a[50]=233;
-	a[51]=239;
-	a[52]=241;
-	a[53]=251;
-	a[54]=257;
-	a[55]=263;
-	a[56]=269;
-	a[57]=271;
-	a[58]=277;
-	a[59]=281;
-	a[60]=283;
-	a[61]=293;
-	a[62]=307;
-	a[63]=311;
-	a[64]=313;
-	a[65]=317;
-	a[66]=331;
-	a[67]=337;
-	a[68]=347;
-	a[69]=349;
-	a[70]=353;
-	a[71]=359;
-	a[72]=367;
-	a[73]=373;
-	a[74]=379;
-	a[75]=383;
-	a[76]=389;
-	a[77]=397;
-	a[78]=401;
-	a[79]=409;
-	a[80]=419;
-	a[81]=421;
-	a[82]=431;
-	a[83]=433;
-	a[84]=439;
-	a[85]=443;
-	a[86]=449;
-	a[87]=457;
-	a[88]=461;
-	a[89]=463;
-	a[90]=467;
-	a[91]=479;
-	a[92]=487;
-	a[93]=491;
-	a[94]=499;
-	a[95]=503;
-	a[96]=509;
-	a[97]=521;
-	a[98]=523;
-	a[99]=541;
-	a[100]=547;
-	a[101]=557;
-	a[102]=563;
-	a[103]=569;
-	a[104]=571;
-	a[105]=577;
-	a[106]=587;
-	a[107]=593;
-	a[108]=599;
-	a[109]=601;
-	a[110]=607;
-	a[111]=613;
-	a[112]=617;
-	a[113]=619;
-	a[114]=631;
-	a[115]=641;
-	a[116]=643;
-	a[117]=647;
-	a[118]=653;
-	a[119]=659;
-	a[120]=661;
-	a[121]=673;
-	a[122]=677;
-	a[123]=683;
-	a[124]=691;
-	a[125]=701;
-	a[126]=709;
-	a[127]=719;
-	a[128]=727;
-	a[129]=733;
-	a[130]=739;
-	a[131]=743;
-	a[132]=751;
-	a[133]=757;
-	a[134]=761;
-	a[135]=769;
-	a[136]=773;
-	a[137]=787;
-	a[138]=797;
-	a[139]=809;
-	a[140]=811;
-	a[141]=821;
-	a[142]=823;
-	a[143]=827;
-	a[144]=829;
-	a[145]=839;
-	a[146]=853;
-	a[147]=857;
-	a[148]=859;
-	a[149]=863;
-	a[150]=877;
-	a[151]=881;
-	a[152]=883;
-	a[153]=887;
-	a[154]=907;
-	a[155]=911;
-	a[156]=919;
-	a[157]=929;
-	a[158]=937;
-	a[159]=941;
-	a[160]=947;
-	a[161]=953;
-	a[162]=967;
-	a[163]=971;
-	a[164]=977;
-	a[165]=983;
-	a[166]=991;
-	a[167]=997;
-	for(int i=0;i<168;i++)
-		printf("%d ",a[i]);
-	return 0;
-}
diff --git a/shui xian hua.cpp b/shui xian hua.cpp
deleted file mode 100644
index eb706454..00000000
--- a/shui xian hua.cpp	
+++ /dev/null
@@ -1,12 +0,0 @@
-#include <iostream>
-#include <math.h>
-using namespace std;
-int main(int argc, char** argv) 
-{
-	for(int i=100;i<1000;i++)
-	{
-		if((pow(i/100,3)+pow(i%100/10,3)+pow(i%100%10,3)==i))
-		cout<<i<<"为水仙花数"<<endl;
-	}		
-	return 0;
-}

From 975dccd22150fe9373fa4877b8c2c7e35189827a Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Thu, 9 Mar 2017 20:14:48 +0800
Subject: [PATCH 03/11] Homework 1-8 test

---
 Diophantus.c     |  18 +++++
 Encrypted.c      |  44 ++++++++++
 Goldbach.c       |  54 +++++++++++++
 Running Letter.c |  29 +++++++
 allPrimes.c      | 206 +++++++++++++++++++++++++++++++++++++++++++++++
 hanio.c          |  26 ++++++
 maze.c           |  97 ++++++++++++++++++++++
 narcissus.c      |  12 +++
 prime.c          |  31 +++++++
 9 files changed, 517 insertions(+)
 create mode 100644 Diophantus.c
 create mode 100644 Encrypted.c
 create mode 100644 Goldbach.c
 create mode 100644 Running Letter.c
 create mode 100644 allPrimes.c
 create mode 100644 hanio.c
 create mode 100644 maze.c
 create mode 100644 narcissus.c
 create mode 100644 prime.c

diff --git a/Diophantus.c b/Diophantus.c
new file mode 100644
index 00000000..21145fdb
--- /dev/null
+++ b/Diophantus.c
@@ -0,0 +1,18 @@
+#include <iostream>
+using namespace std;
+int main(int argc, char** argv)
+{
+    int FatherAge=0;
+	for(double i=1.0;i<100;i++)           //儿子年龄 
+	{
+		for(double j=1;j<200;j++)       //父亲年龄 
+		{
+			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
+			{
+				FatherAge=j;
+			}
+		}
+	}
+	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
+	return 0;
+}
diff --git a/Encrypted.c b/Encrypted.c
new file mode 100644
index 00000000..474d2fab
--- /dev/null
+++ b/Encrypted.c
@@ -0,0 +1,44 @@
+#include <stdio.h> 
+#include <string.h>
+#include <stdlib.h>
+void Encrypte(char* p)
+{
+	int i = 0;
+	while (p[i] != '\0')
+	{
+		p[i] = p[i] + '3' - '1';
+		printf("%c", p[i]);
+		i++;
+	}
+	printf("\n");
+}
+void Decrypte(char* p)
+{
+	int i = 0;
+	while (p[i] != '\0')
+	{
+		p[i] = p[i] - '3' + '1';
+		printf("%c", p[i]);
+		i++;
+	}
+	printf("\n");
+}
+int main()
+{
+	char p[10000];
+	int Judge = 0;
+	printf("Please input the string need opreating\n");
+	scanf("%s", p);
+	printf("En or De?\nPleaes input 1(En) or 2(De)\n");
+	scanf("%d", &Judge);
+	if (Judge == 1)
+	{
+		Encrypte(p);
+	}
+	else if (Judge == 2)
+	{
+		Decrypte(p);
+	}
+    return 0;
+}
+
diff --git a/Goldbach.c b/Goldbach.c
new file mode 100644
index 00000000..29aab0f8
--- /dev/null
+++ b/Goldbach.c
@@ -0,0 +1,54 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+	int a[25];        //打表
+	bool Judge = 0;
+	a[0] = 2;
+	a[1] = 3;
+	a[2] = 5;
+	a[3] = 7;
+	a[4] = 11;
+	a[5] = 13;
+	a[6] = 17;
+	a[7] = 19;
+	a[8] = 23;
+	a[9] = 29;
+	a[10] = 31;
+	a[11] = 37;
+	a[12] = 41;
+	a[13] = 43;
+	a[14] = 47;
+	a[15] = 53;
+	a[16] = 59;
+	a[17] = 61;
+	a[18] = 67;
+	a[19] = 71;
+	a[20] = 73;
+	a[21] = 79;
+	a[22] = 83;
+	a[23] = 89;
+	a[24] = 97;
+	for (int i = 6; i <=100; i+=2)
+	{
+		for (int j = 0; j < 25; j++)
+		{
+			for (int k = 0; k < 25; k++)
+			{
+				if (a[j] + a[k] == i)
+				{
+					Judge = 1;
+					break;
+				}
+			}
+			if (Judge==1)
+			{
+				cout << i << "满足哥德巴赫猜想" << endl;
+				break;
+			}
+		}
+		Judge = 0;
+	}
+    return 0;
+}
+
diff --git a/Running Letter.c b/Running Letter.c
new file mode 100644
index 00000000..2d8f98ca
--- /dev/null
+++ b/Running Letter.c	
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <windows.h>
+int main(int argc, char** argv)
+ {
+ 	while(1)
+ 	{
+	 
+		printf("R");
+	 	Sleep(30);
+		system("cls");
+		for(int i=0;i<79;i++)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");	
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+		for(int i=79;i>=0;i--)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+	}
+	return 0;
+}
diff --git a/allPrimes.c b/allPrimes.c
new file mode 100644
index 00000000..787393bf
--- /dev/null
+++ b/allPrimes.c
@@ -0,0 +1,206 @@
+#include <stdio.h>
+#include <time.h>
+/*bool pd(int n)
+{
+	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
+	{
+		if(n%i==0)
+		return false;
+	}
+	return true;
+}
+
+
+int main(int argc, char** argv) 
+{
+	int a[1000];
+	int tot=0;
+	printf("a[0]=2\n");
+	for(int i=3;i<1000;i++)
+	{
+		if(pd(i))
+		{
+			a[tot++]=i;
+			printf("a[%d]=%d;\n",tot,i);
+		}
+	}
+	return 0;
+}  */
+int main()
+{
+	clock_t t1=clock();
+	int a[500];
+	a[0]=2;
+	a[1]=3;
+	a[2]=5;
+	a[3]=7;
+	a[4]=11;
+	a[5]=13;
+	a[6]=17;
+	a[7]=19;
+	a[8]=23;
+	a[9]=29;
+	a[10]=31;
+	a[11]=37;
+	a[12]=41;
+	a[13]=43;
+	a[14]=47;
+	a[15]=53;
+	a[16]=59;
+	a[17]=61;
+	a[18]=67;
+	a[19]=71;
+	a[20]=73;
+	a[21]=79;
+	a[22]=83;
+	a[23]=89;
+	a[24]=97;
+	a[25]=101;
+	a[26]=103;
+	a[27]=107;
+	a[28]=109;
+	a[29]=113;
+	a[30]=127;
+	a[31]=131;
+	a[32]=137;
+	a[33]=139;
+	a[34]=149;
+	a[35]=151;
+	a[36]=157;
+	a[37]=163;
+	a[38]=167;
+	a[39]=173;
+	a[40]=179;
+	a[41]=181;
+	a[42]=191;
+	a[43]=193;
+	a[44]=197;
+	a[45]=199;
+	a[46]=211;
+	a[47]=223;
+	a[48]=227;
+	a[49]=229;
+	a[50]=233;
+	a[51]=239;
+	a[52]=241;
+	a[53]=251;
+	a[54]=257;
+	a[55]=263;
+	a[56]=269;
+	a[57]=271;
+	a[58]=277;
+	a[59]=281;
+	a[60]=283;
+	a[61]=293;
+	a[62]=307;
+	a[63]=311;
+	a[64]=313;
+	a[65]=317;
+	a[66]=331;
+	a[67]=337;
+	a[68]=347;
+	a[69]=349;
+	a[70]=353;
+	a[71]=359;
+	a[72]=367;
+	a[73]=373;
+	a[74]=379;
+	a[75]=383;
+	a[76]=389;
+	a[77]=397;
+	a[78]=401;
+	a[79]=409;
+	a[80]=419;
+	a[81]=421;
+	a[82]=431;
+	a[83]=433;
+	a[84]=439;
+	a[85]=443;
+	a[86]=449;
+	a[87]=457;
+	a[88]=461;
+	a[89]=463;
+	a[90]=467;
+	a[91]=479;
+	a[92]=487;
+	a[93]=491;
+	a[94]=499;
+	a[95]=503;
+	a[96]=509;
+	a[97]=521;
+	a[98]=523;
+	a[99]=541;
+	a[100]=547;
+	a[101]=557;
+	a[102]=563;
+	a[103]=569;
+	a[104]=571;
+	a[105]=577;
+	a[106]=587;
+	a[107]=593;
+	a[108]=599;
+	a[109]=601;
+	a[110]=607;
+	a[111]=613;
+	a[112]=617;
+	a[113]=619;
+	a[114]=631;
+	a[115]=641;
+	a[116]=643;
+	a[117]=647;
+	a[118]=653;
+	a[119]=659;
+	a[120]=661;
+	a[121]=673;
+	a[122]=677;
+	a[123]=683;
+	a[124]=691;
+	a[125]=701;
+	a[126]=709;
+	a[127]=719;
+	a[128]=727;
+	a[129]=733;
+	a[130]=739;
+	a[131]=743;
+	a[132]=751;
+	a[133]=757;
+	a[134]=761;
+	a[135]=769;
+	a[136]=773;
+	a[137]=787;
+	a[138]=797;
+	a[139]=809;
+	a[140]=811;
+	a[141]=821;
+	a[142]=823;
+	a[143]=827;
+	a[144]=829;
+	a[145]=839;
+	a[146]=853;
+	a[147]=857;
+	a[148]=859;
+	a[149]=863;
+	a[150]=877;
+	a[151]=881;
+	a[152]=883;
+	a[153]=887;
+	a[154]=907;
+	a[155]=911;
+	a[156]=919;
+	a[157]=929;
+	a[158]=937;
+	a[159]=941;
+	a[160]=947;
+	a[161]=953;
+	a[162]=967;
+	a[163]=971;
+	a[164]=977;
+	a[165]=983;
+	a[166]=991;
+	a[167]=997;
+	for(int i=0;i<168;i++)
+		printf("%d ",a[i]);
+	clock_t t2=clock();
+	printf("\nrunning this program costs %d milliseconds\n",t2-t1);
+	return 0;
+}
diff --git a/hanio.c b/hanio.c
new file mode 100644
index 00000000..1e13eb2d
--- /dev/null
+++ b/hanio.c
@@ -0,0 +1,26 @@
+#include <stdio.h>  
+//第一个塔为初始塔，中间的塔为借用塔，最后一个塔为目标塔  
+int i=1;//记录步数  
+void move(int n,char from,char to) //将编号为n的盘子由from移动到to  
+{printf("第%d步:将%d号盘子%c---->%c\n",i++,n,from,to);  
+}  
+void hanoi(int n,char from,char denpend_on,char to) 
+{  
+    if (n==1)  
+    move(1,from,to);//
+    else  
+    {  
+      hanoi(n-1,from,to,denpend_on);
+      move(n,from,to);                
+      hanoi(n-1,denpend_on,from,to);
+    }  
+}  
+void main()  
+{  
+     printf("请输入盘子的个数:\n");  
+     int n;  
+     scanf("%d",&n);  
+     char x='A',y='B',z='C';  
+     printf("盘子移动情况如下:\n");  
+     hanoi(n,x,y,z);  
+}
diff --git a/maze.c b/maze.c
new file mode 100644
index 00000000..24995966
--- /dev/null
+++ b/maze.c
@@ -0,0 +1,97 @@
+#include <stdio.h> 
+#include <time.h>
+#include <conio.h>
+#include <windows.h>
+#include <stdlib.h>
+
+int map[25][25] = {
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+	{ 2,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0 },
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+};
+int i, j;
+void print()
+{
+	for (i = 0; i < 25; i++)
+	{
+		for (j = 0; j < 25; j++)
+		{
+			if (map[i][j] == 1)
+				printf("#");
+			if (map[i][j] == 0)
+				printf(" ");
+			if (map[i][j] == 2)
+				printf("E");
+			if (j == 24)
+			{
+				printf("\n");
+			}
+		}
+	}
+}
+int main()
+{
+	print();
+	int m = 1, n = 0;
+	while (m!=24&&n!=23)
+	{
+		if (GetKeyState(VK_UP) < 0&& map[m - 1][n]==0)
+		{
+			map[m - 1][n] = 2;
+			map[m][n] = 0;
+			--m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_DOWN) < 0 && map[m + 1][n] == 0)
+		{
+			map[m + 1][n] = 2;
+			map[m][n] = 0;
+			++m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_LEFT) < 0 && map[m][n-1] == 0)
+		{
+			map[m][n - 1] = 2;
+			map[m][n] = 0;
+			--n;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_RIGHT) < 0 && map[m][n+1] == 0)
+		{
+			map[m][n + 1] = 2;
+			map[m][n] = 0;
+			++n;
+			system("cls");
+			print();
+		}
+	}
+	system("cls");
+	printf("You win!");
+    return 0;
+}
+
diff --git a/narcissus.c b/narcissus.c
new file mode 100644
index 00000000..eb706454
--- /dev/null
+++ b/narcissus.c
@@ -0,0 +1,12 @@
+#include <iostream>
+#include <math.h>
+using namespace std;
+int main(int argc, char** argv) 
+{
+	for(int i=100;i<1000;i++)
+	{
+		if((pow(i/100,3)+pow(i%100/10,3)+pow(i%100%10,3)==i))
+		cout<<i<<"为水仙花数"<<endl;
+	}		
+	return 0;
+}
diff --git a/prime.c b/prime.c
new file mode 100644
index 00000000..745357e3
--- /dev/null
+++ b/prime.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+int pd(int n)
+{
+	if(n==1||n==2)
+	{
+		return 1;
+	}
+	for(int i=2;i<=n/2;i++)
+	{
+		if(n%i==0)
+		{
+			return 0;
+		}
+	}
+	return 0;
+ } 
+ int main()
+ {
+ 	printf("Please Input a Number");
+ 	int n;
+ 	scanf("%s",&n);
+ 	if(pd(n)==0)
+ 	{
+ 		print("Not Prime");
+	 }
+	 else
+	 {
+	 	print("Prime");
+	 }
+	 return 0;
+ }

From 07f36b3bcdd23b0e1b6077677a9cb9cbff69f355 Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Thu, 9 Mar 2017 22:59:51 +0800
Subject: [PATCH 04/11] Homework 1-8 test

---
 Diophantus.c     |  18 -----
 Encrypted.c      |  44 ----------
 Goldbach.c       |  54 -------------
 Running Letter.c |  29 -------
 allPrimes.c      | 206 -----------------------------------------------
 hanio.c          |  26 ------
 maze.c           |  97 ----------------------
 narcissus.c      |  12 ---
 prime.c          |  31 -------
 9 files changed, 517 deletions(-)
 delete mode 100644 Diophantus.c
 delete mode 100644 Encrypted.c
 delete mode 100644 Goldbach.c
 delete mode 100644 Running Letter.c
 delete mode 100644 allPrimes.c
 delete mode 100644 hanio.c
 delete mode 100644 maze.c
 delete mode 100644 narcissus.c
 delete mode 100644 prime.c

diff --git a/Diophantus.c b/Diophantus.c
deleted file mode 100644
index 21145fdb..00000000
--- a/Diophantus.c
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <iostream>
-using namespace std;
-int main(int argc, char** argv)
-{
-    int FatherAge=0;
-	for(double i=1.0;i<100;i++)           //儿子年龄 
-	{
-		for(double j=1;j<200;j++)       //父亲年龄 
-		{
-			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
-			{
-				FatherAge=j;
-			}
-		}
-	}
-	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
-	return 0;
-}
diff --git a/Encrypted.c b/Encrypted.c
deleted file mode 100644
index 474d2fab..00000000
--- a/Encrypted.c
+++ /dev/null
@@ -1,44 +0,0 @@
-#include <stdio.h> 
-#include <string.h>
-#include <stdlib.h>
-void Encrypte(char* p)
-{
-	int i = 0;
-	while (p[i] != '\0')
-	{
-		p[i] = p[i] + '3' - '1';
-		printf("%c", p[i]);
-		i++;
-	}
-	printf("\n");
-}
-void Decrypte(char* p)
-{
-	int i = 0;
-	while (p[i] != '\0')
-	{
-		p[i] = p[i] - '3' + '1';
-		printf("%c", p[i]);
-		i++;
-	}
-	printf("\n");
-}
-int main()
-{
-	char p[10000];
-	int Judge = 0;
-	printf("Please input the string need opreating\n");
-	scanf("%s", p);
-	printf("En or De?\nPleaes input 1(En) or 2(De)\n");
-	scanf("%d", &Judge);
-	if (Judge == 1)
-	{
-		Encrypte(p);
-	}
-	else if (Judge == 2)
-	{
-		Decrypte(p);
-	}
-    return 0;
-}
-
diff --git a/Goldbach.c b/Goldbach.c
deleted file mode 100644
index 29aab0f8..00000000
--- a/Goldbach.c
+++ /dev/null
@@ -1,54 +0,0 @@
-#include <iostream>
-using namespace std;
-int main()
-{
-	int a[25];        //打表
-	bool Judge = 0;
-	a[0] = 2;
-	a[1] = 3;
-	a[2] = 5;
-	a[3] = 7;
-	a[4] = 11;
-	a[5] = 13;
-	a[6] = 17;
-	a[7] = 19;
-	a[8] = 23;
-	a[9] = 29;
-	a[10] = 31;
-	a[11] = 37;
-	a[12] = 41;
-	a[13] = 43;
-	a[14] = 47;
-	a[15] = 53;
-	a[16] = 59;
-	a[17] = 61;
-	a[18] = 67;
-	a[19] = 71;
-	a[20] = 73;
-	a[21] = 79;
-	a[22] = 83;
-	a[23] = 89;
-	a[24] = 97;
-	for (int i = 6; i <=100; i+=2)
-	{
-		for (int j = 0; j < 25; j++)
-		{
-			for (int k = 0; k < 25; k++)
-			{
-				if (a[j] + a[k] == i)
-				{
-					Judge = 1;
-					break;
-				}
-			}
-			if (Judge==1)
-			{
-				cout << i << "满足哥德巴赫猜想" << endl;
-				break;
-			}
-		}
-		Judge = 0;
-	}
-    return 0;
-}
-
diff --git a/Running Letter.c b/Running Letter.c
deleted file mode 100644
index 2d8f98ca..00000000
--- a/Running Letter.c	
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <iostream>
-#include <windows.h>
-int main(int argc, char** argv)
- {
- 	while(1)
- 	{
-	 
-		printf("R");
-	 	Sleep(30);
-		system("cls");
-		for(int i=0;i<79;i++)
-		{
-			for(int j=0;j<i;j++)
-				printf(" ");	
-			printf("R");
-			Sleep(30);
-			system("cls");
-		}
-		for(int i=79;i>=0;i--)
-		{
-			for(int j=0;j<i;j++)
-				printf(" ");
-			printf("R");
-			Sleep(30);
-			system("cls");
-		}
-	}
-	return 0;
-}
diff --git a/allPrimes.c b/allPrimes.c
deleted file mode 100644
index 787393bf..00000000
--- a/allPrimes.c
+++ /dev/null
@@ -1,206 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-/*bool pd(int n)
-{
-	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
-	{
-		if(n%i==0)
-		return false;
-	}
-	return true;
-}
-
-
-int main(int argc, char** argv) 
-{
-	int a[1000];
-	int tot=0;
-	printf("a[0]=2\n");
-	for(int i=3;i<1000;i++)
-	{
-		if(pd(i))
-		{
-			a[tot++]=i;
-			printf("a[%d]=%d;\n",tot,i);
-		}
-	}
-	return 0;
-}  */
-int main()
-{
-	clock_t t1=clock();
-	int a[500];
-	a[0]=2;
-	a[1]=3;
-	a[2]=5;
-	a[3]=7;
-	a[4]=11;
-	a[5]=13;
-	a[6]=17;
-	a[7]=19;
-	a[8]=23;
-	a[9]=29;
-	a[10]=31;
-	a[11]=37;
-	a[12]=41;
-	a[13]=43;
-	a[14]=47;
-	a[15]=53;
-	a[16]=59;
-	a[17]=61;
-	a[18]=67;
-	a[19]=71;
-	a[20]=73;
-	a[21]=79;
-	a[22]=83;
-	a[23]=89;
-	a[24]=97;
-	a[25]=101;
-	a[26]=103;
-	a[27]=107;
-	a[28]=109;
-	a[29]=113;
-	a[30]=127;
-	a[31]=131;
-	a[32]=137;
-	a[33]=139;
-	a[34]=149;
-	a[35]=151;
-	a[36]=157;
-	a[37]=163;
-	a[38]=167;
-	a[39]=173;
-	a[40]=179;
-	a[41]=181;
-	a[42]=191;
-	a[43]=193;
-	a[44]=197;
-	a[45]=199;
-	a[46]=211;
-	a[47]=223;
-	a[48]=227;
-	a[49]=229;
-	a[50]=233;
-	a[51]=239;
-	a[52]=241;
-	a[53]=251;
-	a[54]=257;
-	a[55]=263;
-	a[56]=269;
-	a[57]=271;
-	a[58]=277;
-	a[59]=281;
-	a[60]=283;
-	a[61]=293;
-	a[62]=307;
-	a[63]=311;
-	a[64]=313;
-	a[65]=317;
-	a[66]=331;
-	a[67]=337;
-	a[68]=347;
-	a[69]=349;
-	a[70]=353;
-	a[71]=359;
-	a[72]=367;
-	a[73]=373;
-	a[74]=379;
-	a[75]=383;
-	a[76]=389;
-	a[77]=397;
-	a[78]=401;
-	a[79]=409;
-	a[80]=419;
-	a[81]=421;
-	a[82]=431;
-	a[83]=433;
-	a[84]=439;
-	a[85]=443;
-	a[86]=449;
-	a[87]=457;
-	a[88]=461;
-	a[89]=463;
-	a[90]=467;
-	a[91]=479;
-	a[92]=487;
-	a[93]=491;
-	a[94]=499;
-	a[95]=503;
-	a[96]=509;
-	a[97]=521;
-	a[98]=523;
-	a[99]=541;
-	a[100]=547;
-	a[101]=557;
-	a[102]=563;
-	a[103]=569;
-	a[104]=571;
-	a[105]=577;
-	a[106]=587;
-	a[107]=593;
-	a[108]=599;
-	a[109]=601;
-	a[110]=607;
-	a[111]=613;
-	a[112]=617;
-	a[113]=619;
-	a[114]=631;
-	a[115]=641;
-	a[116]=643;
-	a[117]=647;
-	a[118]=653;
-	a[119]=659;
-	a[120]=661;
-	a[121]=673;
-	a[122]=677;
-	a[123]=683;
-	a[124]=691;
-	a[125]=701;
-	a[126]=709;
-	a[127]=719;
-	a[128]=727;
-	a[129]=733;
-	a[130]=739;
-	a[131]=743;
-	a[132]=751;
-	a[133]=757;
-	a[134]=761;
-	a[135]=769;
-	a[136]=773;
-	a[137]=787;
-	a[138]=797;
-	a[139]=809;
-	a[140]=811;
-	a[141]=821;
-	a[142]=823;
-	a[143]=827;
-	a[144]=829;
-	a[145]=839;
-	a[146]=853;
-	a[147]=857;
-	a[148]=859;
-	a[149]=863;
-	a[150]=877;
-	a[151]=881;
-	a[152]=883;
-	a[153]=887;
-	a[154]=907;
-	a[155]=911;
-	a[156]=919;
-	a[157]=929;
-	a[158]=937;
-	a[159]=941;
-	a[160]=947;
-	a[161]=953;
-	a[162]=967;
-	a[163]=971;
-	a[164]=977;
-	a[165]=983;
-	a[166]=991;
-	a[167]=997;
-	for(int i=0;i<168;i++)
-		printf("%d ",a[i]);
-	clock_t t2=clock();
-	printf("\nrunning this program costs %d milliseconds\n",t2-t1);
-	return 0;
-}
diff --git a/hanio.c b/hanio.c
deleted file mode 100644
index 1e13eb2d..00000000
--- a/hanio.c
+++ /dev/null
@@ -1,26 +0,0 @@
-#include <stdio.h>  
-//第一个塔为初始塔，中间的塔为借用塔，最后一个塔为目标塔  
-int i=1;//记录步数  
-void move(int n,char from,char to) //将编号为n的盘子由from移动到to  
-{printf("第%d步:将%d号盘子%c---->%c\n",i++,n,from,to);  
-}  
-void hanoi(int n,char from,char denpend_on,char to) 
-{  
-    if (n==1)  
-    move(1,from,to);//
-    else  
-    {  
-      hanoi(n-1,from,to,denpend_on);
-      move(n,from,to);                
-      hanoi(n-1,denpend_on,from,to);
-    }  
-}  
-void main()  
-{  
-     printf("请输入盘子的个数:\n");  
-     int n;  
-     scanf("%d",&n);  
-     char x='A',y='B',z='C';  
-     printf("盘子移动情况如下:\n");  
-     hanoi(n,x,y,z);  
-}
diff --git a/maze.c b/maze.c
deleted file mode 100644
index 24995966..00000000
--- a/maze.c
+++ /dev/null
@@ -1,97 +0,0 @@
-#include <stdio.h> 
-#include <time.h>
-#include <conio.h>
-#include <windows.h>
-#include <stdlib.h>
-
-int map[25][25] = {
-	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
-	{ 2,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
-	{ 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0 },
-	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
-};
-int i, j;
-void print()
-{
-	for (i = 0; i < 25; i++)
-	{
-		for (j = 0; j < 25; j++)
-		{
-			if (map[i][j] == 1)
-				printf("#");
-			if (map[i][j] == 0)
-				printf(" ");
-			if (map[i][j] == 2)
-				printf("E");
-			if (j == 24)
-			{
-				printf("\n");
-			}
-		}
-	}
-}
-int main()
-{
-	print();
-	int m = 1, n = 0;
-	while (m!=24&&n!=23)
-	{
-		if (GetKeyState(VK_UP) < 0&& map[m - 1][n]==0)
-		{
-			map[m - 1][n] = 2;
-			map[m][n] = 0;
-			--m;
-			system("cls");
-			print();
-		}
-		if (GetKeyState(VK_DOWN) < 0 && map[m + 1][n] == 0)
-		{
-			map[m + 1][n] = 2;
-			map[m][n] = 0;
-			++m;
-			system("cls");
-			print();
-		}
-		if (GetKeyState(VK_LEFT) < 0 && map[m][n-1] == 0)
-		{
-			map[m][n - 1] = 2;
-			map[m][n] = 0;
-			--n;
-			system("cls");
-			print();
-		}
-		if (GetKeyState(VK_RIGHT) < 0 && map[m][n+1] == 0)
-		{
-			map[m][n + 1] = 2;
-			map[m][n] = 0;
-			++n;
-			system("cls");
-			print();
-		}
-	}
-	system("cls");
-	printf("You win!");
-    return 0;
-}
-
diff --git a/narcissus.c b/narcissus.c
deleted file mode 100644
index eb706454..00000000
--- a/narcissus.c
+++ /dev/null
@@ -1,12 +0,0 @@
-#include <iostream>
-#include <math.h>
-using namespace std;
-int main(int argc, char** argv) 
-{
-	for(int i=100;i<1000;i++)
-	{
-		if((pow(i/100,3)+pow(i%100/10,3)+pow(i%100%10,3)==i))
-		cout<<i<<"为水仙花数"<<endl;
-	}		
-	return 0;
-}
diff --git a/prime.c b/prime.c
deleted file mode 100644
index 745357e3..00000000
--- a/prime.c
+++ /dev/null
@@ -1,31 +0,0 @@
-#include <stdio.h>
-int pd(int n)
-{
-	if(n==1||n==2)
-	{
-		return 1;
-	}
-	for(int i=2;i<=n/2;i++)
-	{
-		if(n%i==0)
-		{
-			return 0;
-		}
-	}
-	return 0;
- } 
- int main()
- {
- 	printf("Please Input a Number");
- 	int n;
- 	scanf("%s",&n);
- 	if(pd(n)==0)
- 	{
- 		print("Not Prime");
-	 }
-	 else
-	 {
-	 	print("Prime");
-	 }
-	 return 0;
- }

From e20f47593248ed74395e8847880434ce7aae432f Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Thu, 9 Mar 2017 23:00:56 +0800
Subject: [PATCH 05/11] Revert "Homework 1-8 test"

This reverts commit 07f36b3bcdd23b0e1b6077677a9cb9cbff69f355.
---
 Diophantus.c     |  18 +++++
 Encrypted.c      |  44 ++++++++++
 Goldbach.c       |  54 +++++++++++++
 Running Letter.c |  29 +++++++
 allPrimes.c      | 206 +++++++++++++++++++++++++++++++++++++++++++++++
 hanio.c          |  26 ++++++
 maze.c           |  97 ++++++++++++++++++++++
 narcissus.c      |  12 +++
 prime.c          |  31 +++++++
 9 files changed, 517 insertions(+)
 create mode 100644 Diophantus.c
 create mode 100644 Encrypted.c
 create mode 100644 Goldbach.c
 create mode 100644 Running Letter.c
 create mode 100644 allPrimes.c
 create mode 100644 hanio.c
 create mode 100644 maze.c
 create mode 100644 narcissus.c
 create mode 100644 prime.c

diff --git a/Diophantus.c b/Diophantus.c
new file mode 100644
index 00000000..21145fdb
--- /dev/null
+++ b/Diophantus.c
@@ -0,0 +1,18 @@
+#include <iostream>
+using namespace std;
+int main(int argc, char** argv)
+{
+    int FatherAge=0;
+	for(double i=1.0;i<100;i++)           //儿子年龄 
+	{
+		for(double j=1;j<200;j++)       //父亲年龄 
+		{
+			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
+			{
+				FatherAge=j;
+			}
+		}
+	}
+	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
+	return 0;
+}
diff --git a/Encrypted.c b/Encrypted.c
new file mode 100644
index 00000000..474d2fab
--- /dev/null
+++ b/Encrypted.c
@@ -0,0 +1,44 @@
+#include <stdio.h> 
+#include <string.h>
+#include <stdlib.h>
+void Encrypte(char* p)
+{
+	int i = 0;
+	while (p[i] != '\0')
+	{
+		p[i] = p[i] + '3' - '1';
+		printf("%c", p[i]);
+		i++;
+	}
+	printf("\n");
+}
+void Decrypte(char* p)
+{
+	int i = 0;
+	while (p[i] != '\0')
+	{
+		p[i] = p[i] - '3' + '1';
+		printf("%c", p[i]);
+		i++;
+	}
+	printf("\n");
+}
+int main()
+{
+	char p[10000];
+	int Judge = 0;
+	printf("Please input the string need opreating\n");
+	scanf("%s", p);
+	printf("En or De?\nPleaes input 1(En) or 2(De)\n");
+	scanf("%d", &Judge);
+	if (Judge == 1)
+	{
+		Encrypte(p);
+	}
+	else if (Judge == 2)
+	{
+		Decrypte(p);
+	}
+    return 0;
+}
+
diff --git a/Goldbach.c b/Goldbach.c
new file mode 100644
index 00000000..29aab0f8
--- /dev/null
+++ b/Goldbach.c
@@ -0,0 +1,54 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+	int a[25];        //打表
+	bool Judge = 0;
+	a[0] = 2;
+	a[1] = 3;
+	a[2] = 5;
+	a[3] = 7;
+	a[4] = 11;
+	a[5] = 13;
+	a[6] = 17;
+	a[7] = 19;
+	a[8] = 23;
+	a[9] = 29;
+	a[10] = 31;
+	a[11] = 37;
+	a[12] = 41;
+	a[13] = 43;
+	a[14] = 47;
+	a[15] = 53;
+	a[16] = 59;
+	a[17] = 61;
+	a[18] = 67;
+	a[19] = 71;
+	a[20] = 73;
+	a[21] = 79;
+	a[22] = 83;
+	a[23] = 89;
+	a[24] = 97;
+	for (int i = 6; i <=100; i+=2)
+	{
+		for (int j = 0; j < 25; j++)
+		{
+			for (int k = 0; k < 25; k++)
+			{
+				if (a[j] + a[k] == i)
+				{
+					Judge = 1;
+					break;
+				}
+			}
+			if (Judge==1)
+			{
+				cout << i << "满足哥德巴赫猜想" << endl;
+				break;
+			}
+		}
+		Judge = 0;
+	}
+    return 0;
+}
+
diff --git a/Running Letter.c b/Running Letter.c
new file mode 100644
index 00000000..2d8f98ca
--- /dev/null
+++ b/Running Letter.c	
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <windows.h>
+int main(int argc, char** argv)
+ {
+ 	while(1)
+ 	{
+	 
+		printf("R");
+	 	Sleep(30);
+		system("cls");
+		for(int i=0;i<79;i++)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");	
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+		for(int i=79;i>=0;i--)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+	}
+	return 0;
+}
diff --git a/allPrimes.c b/allPrimes.c
new file mode 100644
index 00000000..787393bf
--- /dev/null
+++ b/allPrimes.c
@@ -0,0 +1,206 @@
+#include <stdio.h>
+#include <time.h>
+/*bool pd(int n)
+{
+	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
+	{
+		if(n%i==0)
+		return false;
+	}
+	return true;
+}
+
+
+int main(int argc, char** argv) 
+{
+	int a[1000];
+	int tot=0;
+	printf("a[0]=2\n");
+	for(int i=3;i<1000;i++)
+	{
+		if(pd(i))
+		{
+			a[tot++]=i;
+			printf("a[%d]=%d;\n",tot,i);
+		}
+	}
+	return 0;
+}  */
+int main()
+{
+	clock_t t1=clock();
+	int a[500];
+	a[0]=2;
+	a[1]=3;
+	a[2]=5;
+	a[3]=7;
+	a[4]=11;
+	a[5]=13;
+	a[6]=17;
+	a[7]=19;
+	a[8]=23;
+	a[9]=29;
+	a[10]=31;
+	a[11]=37;
+	a[12]=41;
+	a[13]=43;
+	a[14]=47;
+	a[15]=53;
+	a[16]=59;
+	a[17]=61;
+	a[18]=67;
+	a[19]=71;
+	a[20]=73;
+	a[21]=79;
+	a[22]=83;
+	a[23]=89;
+	a[24]=97;
+	a[25]=101;
+	a[26]=103;
+	a[27]=107;
+	a[28]=109;
+	a[29]=113;
+	a[30]=127;
+	a[31]=131;
+	a[32]=137;
+	a[33]=139;
+	a[34]=149;
+	a[35]=151;
+	a[36]=157;
+	a[37]=163;
+	a[38]=167;
+	a[39]=173;
+	a[40]=179;
+	a[41]=181;
+	a[42]=191;
+	a[43]=193;
+	a[44]=197;
+	a[45]=199;
+	a[46]=211;
+	a[47]=223;
+	a[48]=227;
+	a[49]=229;
+	a[50]=233;
+	a[51]=239;
+	a[52]=241;
+	a[53]=251;
+	a[54]=257;
+	a[55]=263;
+	a[56]=269;
+	a[57]=271;
+	a[58]=277;
+	a[59]=281;
+	a[60]=283;
+	a[61]=293;
+	a[62]=307;
+	a[63]=311;
+	a[64]=313;
+	a[65]=317;
+	a[66]=331;
+	a[67]=337;
+	a[68]=347;
+	a[69]=349;
+	a[70]=353;
+	a[71]=359;
+	a[72]=367;
+	a[73]=373;
+	a[74]=379;
+	a[75]=383;
+	a[76]=389;
+	a[77]=397;
+	a[78]=401;
+	a[79]=409;
+	a[80]=419;
+	a[81]=421;
+	a[82]=431;
+	a[83]=433;
+	a[84]=439;
+	a[85]=443;
+	a[86]=449;
+	a[87]=457;
+	a[88]=461;
+	a[89]=463;
+	a[90]=467;
+	a[91]=479;
+	a[92]=487;
+	a[93]=491;
+	a[94]=499;
+	a[95]=503;
+	a[96]=509;
+	a[97]=521;
+	a[98]=523;
+	a[99]=541;
+	a[100]=547;
+	a[101]=557;
+	a[102]=563;
+	a[103]=569;
+	a[104]=571;
+	a[105]=577;
+	a[106]=587;
+	a[107]=593;
+	a[108]=599;
+	a[109]=601;
+	a[110]=607;
+	a[111]=613;
+	a[112]=617;
+	a[113]=619;
+	a[114]=631;
+	a[115]=641;
+	a[116]=643;
+	a[117]=647;
+	a[118]=653;
+	a[119]=659;
+	a[120]=661;
+	a[121]=673;
+	a[122]=677;
+	a[123]=683;
+	a[124]=691;
+	a[125]=701;
+	a[126]=709;
+	a[127]=719;
+	a[128]=727;
+	a[129]=733;
+	a[130]=739;
+	a[131]=743;
+	a[132]=751;
+	a[133]=757;
+	a[134]=761;
+	a[135]=769;
+	a[136]=773;
+	a[137]=787;
+	a[138]=797;
+	a[139]=809;
+	a[140]=811;
+	a[141]=821;
+	a[142]=823;
+	a[143]=827;
+	a[144]=829;
+	a[145]=839;
+	a[146]=853;
+	a[147]=857;
+	a[148]=859;
+	a[149]=863;
+	a[150]=877;
+	a[151]=881;
+	a[152]=883;
+	a[153]=887;
+	a[154]=907;
+	a[155]=911;
+	a[156]=919;
+	a[157]=929;
+	a[158]=937;
+	a[159]=941;
+	a[160]=947;
+	a[161]=953;
+	a[162]=967;
+	a[163]=971;
+	a[164]=977;
+	a[165]=983;
+	a[166]=991;
+	a[167]=997;
+	for(int i=0;i<168;i++)
+		printf("%d ",a[i]);
+	clock_t t2=clock();
+	printf("\nrunning this program costs %d milliseconds\n",t2-t1);
+	return 0;
+}
diff --git a/hanio.c b/hanio.c
new file mode 100644
index 00000000..1e13eb2d
--- /dev/null
+++ b/hanio.c
@@ -0,0 +1,26 @@
+#include <stdio.h>  
+//第一个塔为初始塔，中间的塔为借用塔，最后一个塔为目标塔  
+int i=1;//记录步数  
+void move(int n,char from,char to) //将编号为n的盘子由from移动到to  
+{printf("第%d步:将%d号盘子%c---->%c\n",i++,n,from,to);  
+}  
+void hanoi(int n,char from,char denpend_on,char to) 
+{  
+    if (n==1)  
+    move(1,from,to);//
+    else  
+    {  
+      hanoi(n-1,from,to,denpend_on);
+      move(n,from,to);                
+      hanoi(n-1,denpend_on,from,to);
+    }  
+}  
+void main()  
+{  
+     printf("请输入盘子的个数:\n");  
+     int n;  
+     scanf("%d",&n);  
+     char x='A',y='B',z='C';  
+     printf("盘子移动情况如下:\n");  
+     hanoi(n,x,y,z);  
+}
diff --git a/maze.c b/maze.c
new file mode 100644
index 00000000..24995966
--- /dev/null
+++ b/maze.c
@@ -0,0 +1,97 @@
+#include <stdio.h> 
+#include <time.h>
+#include <conio.h>
+#include <windows.h>
+#include <stdlib.h>
+
+int map[25][25] = {
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+	{ 2,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0 },
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+};
+int i, j;
+void print()
+{
+	for (i = 0; i < 25; i++)
+	{
+		for (j = 0; j < 25; j++)
+		{
+			if (map[i][j] == 1)
+				printf("#");
+			if (map[i][j] == 0)
+				printf(" ");
+			if (map[i][j] == 2)
+				printf("E");
+			if (j == 24)
+			{
+				printf("\n");
+			}
+		}
+	}
+}
+int main()
+{
+	print();
+	int m = 1, n = 0;
+	while (m!=24&&n!=23)
+	{
+		if (GetKeyState(VK_UP) < 0&& map[m - 1][n]==0)
+		{
+			map[m - 1][n] = 2;
+			map[m][n] = 0;
+			--m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_DOWN) < 0 && map[m + 1][n] == 0)
+		{
+			map[m + 1][n] = 2;
+			map[m][n] = 0;
+			++m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_LEFT) < 0 && map[m][n-1] == 0)
+		{
+			map[m][n - 1] = 2;
+			map[m][n] = 0;
+			--n;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_RIGHT) < 0 && map[m][n+1] == 0)
+		{
+			map[m][n + 1] = 2;
+			map[m][n] = 0;
+			++n;
+			system("cls");
+			print();
+		}
+	}
+	system("cls");
+	printf("You win!");
+    return 0;
+}
+
diff --git a/narcissus.c b/narcissus.c
new file mode 100644
index 00000000..eb706454
--- /dev/null
+++ b/narcissus.c
@@ -0,0 +1,12 @@
+#include <iostream>
+#include <math.h>
+using namespace std;
+int main(int argc, char** argv) 
+{
+	for(int i=100;i<1000;i++)
+	{
+		if((pow(i/100,3)+pow(i%100/10,3)+pow(i%100%10,3)==i))
+		cout<<i<<"为水仙花数"<<endl;
+	}		
+	return 0;
+}
diff --git a/prime.c b/prime.c
new file mode 100644
index 00000000..745357e3
--- /dev/null
+++ b/prime.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+int pd(int n)
+{
+	if(n==1||n==2)
+	{
+		return 1;
+	}
+	for(int i=2;i<=n/2;i++)
+	{
+		if(n%i==0)
+		{
+			return 0;
+		}
+	}
+	return 0;
+ } 
+ int main()
+ {
+ 	printf("Please Input a Number");
+ 	int n;
+ 	scanf("%s",&n);
+ 	if(pd(n)==0)
+ 	{
+ 		print("Not Prime");
+	 }
+	 else
+	 {
+	 	print("Prime");
+	 }
+	 return 0;
+ }

From 5ef02441cffd3bc6b44dbf1287d9870174bc6982 Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Sat, 11 Mar 2017 15:53:53 +0800
Subject: [PATCH 06/11] test

---
 .../level1/p01_runningLetter/Running Letter.c | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 practices/c/level1/p01_runningLetter/Running Letter.c

diff --git a/practices/c/level1/p01_runningLetter/Running Letter.c b/practices/c/level1/p01_runningLetter/Running Letter.c
new file mode 100644
index 00000000..2d8f98ca
--- /dev/null
+++ b/practices/c/level1/p01_runningLetter/Running Letter.c	
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <windows.h>
+int main(int argc, char** argv)
+ {
+ 	while(1)
+ 	{
+	 
+		printf("R");
+	 	Sleep(30);
+		system("cls");
+		for(int i=0;i<79;i++)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");	
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+		for(int i=79;i>=0;i--)
+		{
+			for(int j=0;j<i;j++)
+				printf(" ");
+			printf("R");
+			Sleep(30);
+			system("cls");
+		}
+	}
+	return 0;
+}

From da8183a444602f478bc43b748e8e0b35ae99ce9c Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Mon, 13 Mar 2017 12:12:57 +0800
Subject: [PATCH 07/11] Second Edition
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

涓や釜璐ㄦ暟琛ㄩ兘鏄敤绋嬪簭鎵撳嚭鏉ョ殑 杩欐牱杈撳嚭绱犳暟鏇村揩锛屼絾缂虹偣鏄笉閫傜敤浜庡ぇ鏁伴噺鐨勭礌鏁帮紝2-1000杩樻槸鍙互鐨�
---
 Diophantus.c     | 10 +++++-----
 Encrypted.c      |  8 ++++++++
 Goldbach.c       | 47 +++++++++++++++++++++++++++++++++++++++--------
 Running Letter.c | 39 ++++++++++++++++++++++-----------------
 allPrimes.c      |  9 +++++----
 5 files changed, 79 insertions(+), 34 deletions(-)

diff --git a/Diophantus.c b/Diophantus.c
index 21145fdb..4f2275bc 100644
--- a/Diophantus.c
+++ b/Diophantus.c
@@ -1,18 +1,18 @@
-#include <iostream>
-using namespace std;
+#include <stdio.h>
 int main(int argc, char** argv)
 {
-    int FatherAge=0;
+    int fatherAge=0;
 	for(double i=1.0;i<100;i++)           //儿子年龄 
 	{
 		for(double j=1;j<200;j++)       //父亲年龄 
 		{
 			if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j))
 			{
-				FatherAge=j;
+				fatherAge=j;
+				break;
 			}
 		}
 	}
-	cout<<"儿子死时丢番图年龄为"<<FatherAge-4<<endl; 
+	printf("儿子死时丢番图年龄为%d",FatherAge-4);
 	return 0;
 }
diff --git a/Encrypted.c b/Encrypted.c
index 474d2fab..50f35036 100644
--- a/Encrypted.c
+++ b/Encrypted.c
@@ -1,6 +1,7 @@
 #include <stdio.h> 
 #include <string.h>
 #include <stdlib.h>
+
 void Encrypte(char* p)
 {
 	int i = 0;
@@ -12,6 +13,7 @@ void Encrypte(char* p)
 	}
 	printf("\n");
 }
+
 void Decrypte(char* p)
 {
 	int i = 0;
@@ -23,6 +25,7 @@ void Decrypte(char* p)
 	}
 	printf("\n");
 }
+
 int main()
 {
 	char p[10000];
@@ -39,6 +42,11 @@ int main()
 	{
 		Decrypte(p);
 	}
+	else
+	{
+		printf("Input Error!");
+		return -1;
+	}
     return 0;
 }
 
diff --git a/Goldbach.c b/Goldbach.c
index 29aab0f8..86b8ad4e 100644
--- a/Goldbach.c
+++ b/Goldbach.c
@@ -1,9 +1,36 @@
-#include <iostream>
-using namespace std;
+#include <stdio.h>
+
+/*int pd(int n)
+{
+	for(int i=2;i<=n/2;i++)                    //This program is used for drawing a table
+	{
+		if(n%i==0)
+		return 0;
+	}
+	return 1;
+}
+
+
+int main(int argc, char** argv) 
+{
+	int a[100];
+	int tot=0;
+	printf("a[0]=2\n");
+	for(int i=3;i<100;i++)
+	{
+		if(pd(i))
+		{
+			a[tot++]=i;
+			printf("a[%d]=%d;\n",tot,i);
+		}
+	}
+	return 0;
+}  */
+
 int main()
 {
 	int a[25];        //打表
-	bool Judge = 0;
+	int judge = 0;
 	a[0] = 2;
 	a[1] = 3;
 	a[2] = 5;
@@ -29,7 +56,7 @@ int main()
 	a[22] = 83;
 	a[23] = 89;
 	a[24] = 97;
-	for (int i = 6; i <=100; i+=2)
+	for (int i = 4; i <=100; i+=2)
 	{
 		for (int j = 0; j < 25; j++)
 		{
@@ -37,17 +64,21 @@ int main()
 			{
 				if (a[j] + a[k] == i)
 				{
-					Judge = 1;
+					judge = 1;
 					break;
 				}
 			}
-			if (Judge==1)
+			if (judge==1)
 			{
 				cout << i << "满足哥德巴赫猜想" << endl;
 				break;
 			}
-		}
-		Judge = 0;
+			else if (judge==0)
+			{
+				return -1;
+				printf("Goldbach do not exists");
+			}
+		judge = 0;
 	}
     return 0;
 }
diff --git a/Running Letter.c b/Running Letter.c
index 2d8f98ca..ece4e0aa 100644
--- a/Running Letter.c	
+++ b/Running Letter.c	
@@ -1,29 +1,34 @@
-#include <iostream>
+#include <stdio.h>
 #include <windows.h>
+
 int main(int argc, char** argv)
- {
- 	while(1)
- 	{
-	 
+{
+	int i = 0;
+	int j = 0;
+	while (1)
+	{
 		printf("R");
-	 	Sleep(30);
+		Sleep(30);
 		system("cls");
-		for(int i=0;i<79;i++)
+		int op = 1;
+		for (i = 0; i<79&&i>=0; i+=op)
 		{
-			for(int j=0;j<i;j++)
-				printf(" ");	
-			printf("R");
-			Sleep(30);
-			system("cls");
-		}
-		for(int i=79;i>=0;i--)
-		{
-			for(int j=0;j<i;j++)
+			for (j = 0; j < i; j++)
+			{
 				printf(" ");
+			}
 			printf("R");
 			Sleep(30);
 			system("cls");
+			if (i == 78)
+			{
+				op = -1;
+			}
+			if (i == 0)
+			{
+				op = 1;
+			}
 		}
 	}
 	return 0;
-}
+}
\ No newline at end of file
diff --git a/allPrimes.c b/allPrimes.c
index 787393bf..5ab0fa57 100644
--- a/allPrimes.c
+++ b/allPrimes.c
@@ -1,13 +1,14 @@
 #include <stdio.h>
 #include <time.h>
-/*bool pd(int n)
+#include <math.h>
+/*int pd(int n)
 {
-	for(int i=2;i<=n/2;i++)                    //此程序用来打表 
+	for(int i=2;i<=sqrt(n);i++)                    //此程序用来打表 
 	{
 		if(n%i==0)
-		return false;
+		return 0;
 	}
-	return true;
+	return 1;
 }
 
 

From 768be0e1ebc3c1472462ad34442965a2109b8618 Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Mon, 1 May 2017 13:44:29 +0800
Subject: [PATCH 08/11] Second Submission

---
 practices/cpp/level1/p01_Queue/main_quene.cpp |  13 +++
 practices/cpp/level1/p01_Queue/queue.cpp      |  35 ++++++
 practices/cpp/level1/p01_Queue/queue.h        |  17 +++
 practices/cpp/level1/p02_Stack/main_stack.cpp |  18 +++
 practices/cpp/level1/p02_Stack/stack.cpp      |  26 +++++
 practices/cpp/level1/p02_Stack/stack.h        |  18 +++
 .../cpp/level1/p03_SafeArray/safearray.cpp    |  40 +++++++
 .../cpp/level1/p03_SafeArray/safearray.h      |  12 ++
 .../level1/p03_SafeArray/safearray_main.cpp   |  11 ++
 .../cpp/level1/p04_cppScoreManagement/CLASS.h |  22 ++++
 .../level1/p04_cppScoreManagement/class.cpp   | 107 ++++++++++++++++++
 .../p04_cppScoreManagement/main_class.cpp     |  31 +++++
 12 files changed, 350 insertions(+)
 create mode 100644 practices/cpp/level1/p01_Queue/main_quene.cpp
 create mode 100644 practices/cpp/level1/p01_Queue/queue.cpp
 create mode 100644 practices/cpp/level1/p01_Queue/queue.h
 create mode 100644 practices/cpp/level1/p02_Stack/main_stack.cpp
 create mode 100644 practices/cpp/level1/p02_Stack/stack.cpp
 create mode 100644 practices/cpp/level1/p02_Stack/stack.h
 create mode 100644 practices/cpp/level1/p03_SafeArray/safearray.cpp
 create mode 100644 practices/cpp/level1/p03_SafeArray/safearray.h
 create mode 100644 practices/cpp/level1/p03_SafeArray/safearray_main.cpp
 create mode 100644 practices/cpp/level1/p04_cppScoreManagement/CLASS.h
 create mode 100644 practices/cpp/level1/p04_cppScoreManagement/class.cpp
 create mode 100644 practices/cpp/level1/p04_cppScoreManagement/main_class.cpp

diff --git a/practices/cpp/level1/p01_Queue/main_quene.cpp b/practices/cpp/level1/p01_Queue/main_quene.cpp
new file mode 100644
index 00000000..c31cb38c
--- /dev/null
+++ b/practices/cpp/level1/p01_Queue/main_quene.cpp
@@ -0,0 +1,13 @@
+#include<iostream>
+#include"Queue.h"
+using namespace std;
+
+int main()
+{
+	Queue queue;
+	while(!isFull())
+	{
+		append(100);
+	}
+	return 0;
+ } 
diff --git a/practices/cpp/level1/p01_Queue/queue.cpp b/practices/cpp/level1/p01_Queue/queue.cpp
new file mode 100644
index 00000000..f18d3862
--- /dev/null
+++ b/practices/cpp/level1/p01_Queue/queue.cpp
@@ -0,0 +1,35 @@
+#include "Queue.h"
+bool Queue::isFull()
+{
+	if(data[100]!=0)
+	{
+		return true;
+	}
+	else
+	return false;
+}
+bool Quene::isEmpty()
+{
+	return data==tail;
+} 
+void Queue::append(int item)
+{
+	if ((tail+1)%100==head) 
+	{
+		cout<<"Full!\n";
+		return;
+	}
+	tail++;
+	if (tail==MAXQUEUE)
+	tail=0;
+	data[tail]=item;
+}
+void Queue::pop()
+{
+	if (head!=tail) 
+	{
+		head++;
+		if (head==MAXQUEUE) 
+			head=0;
+	}
+}
diff --git a/practices/cpp/level1/p01_Queue/queue.h b/practices/cpp/level1/p01_Queue/queue.h
new file mode 100644
index 00000000..8f03fab9
--- /dev/null
+++ b/practices/cpp/level1/p01_Queue/queue.h
@@ -0,0 +1,17 @@
+#ifndef Queue_H
+#define Queue_H
+
+class Queue
+{
+	public:
+		bool isFull();
+		void append(int item);
+		bool isEmpty();
+	protected:
+	private:
+		int tail=0;
+		int head=0;
+		int data[100]={0};
+};
+
+#endif
diff --git a/practices/cpp/level1/p02_Stack/main_stack.cpp b/practices/cpp/level1/p02_Stack/main_stack.cpp
new file mode 100644
index 00000000..d1d9bd5a
--- /dev/null
+++ b/practices/cpp/level1/p02_Stack/main_stack.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include"stack.h"
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char** argv) {
+	stack stack1;
+	stack1.push(123);
+	if(stack1.isEmpty()==1)
+	{
+		printf("The stack is empty");
+	}
+	else
+	{
+		printf("The stack is not empty");
+	}
+	return 0;
+}
diff --git a/practices/cpp/level1/p02_Stack/stack.cpp b/practices/cpp/level1/p02_Stack/stack.cpp
new file mode 100644
index 00000000..0e7cd379
--- /dev/null
+++ b/practices/cpp/level1/p02_Stack/stack.cpp
@@ -0,0 +1,26 @@
+#include "stack.h"
+void stack::push(int temp)
+{
+	data[tail]=temp;
+	tail++;
+}
+void stack::pop()
+{
+	tail--;
+}
+bool stack::isFull()
+{
+	if(data[MAXDATA]!=0)
+	{
+		return true;
+	}
+		return false;
+}
+bool stack::isEmpty()
+{
+	if(data[0]==0)
+	{
+		return true;
+	}
+	return false;
+}
diff --git a/practices/cpp/level1/p02_Stack/stack.h b/practices/cpp/level1/p02_Stack/stack.h
new file mode 100644
index 00000000..ce14fae7
--- /dev/null
+++ b/practices/cpp/level1/p02_Stack/stack.h
@@ -0,0 +1,18 @@
+#ifndef STACK_H
+#define STACK_H
+#define MAXDATA 100
+
+class stack
+{
+	public:
+		void push(int temp);
+		void pop();
+		bool isFull();
+		bool isEmpty();
+	private:
+		int data[100]={0};
+		int tail=0;
+		int head=0;
+};
+
+#endif
diff --git a/practices/cpp/level1/p03_SafeArray/safearray.cpp b/practices/cpp/level1/p03_SafeArray/safearray.cpp
new file mode 100644
index 00000000..1fae20cb
--- /dev/null
+++ b/practices/cpp/level1/p03_SafeArray/safearray.cpp
@@ -0,0 +1,40 @@
+#include "SafeArray.h"
+#include <cstdio>
+
+SafeArray::SafeArray()
+{
+	data=NULL;
+	totalLength=0;
+}
+
+SafeArray::~SafeArray()
+{
+	delete []data;
+	totalLength=0;
+	data=NULL;
+}
+
+void SafeArray::create(int length)
+{
+	totalLength=length;
+	data=new int[length];
+}
+
+bool SafeArray::write(int index,int number)
+{
+	if (index<0||index>=totalLength)
+	{
+		return false;
+	}
+	data[index]=number;
+	return true;
+}
+
+int SafeArray::read(int index){
+	if (index<0||index>=totalLength)
+	{
+		printf("越界");
+		return -1;
+	}
+	return data[index];
+}
diff --git a/practices/cpp/level1/p03_SafeArray/safearray.h b/practices/cpp/level1/p03_SafeArray/safearray.h
new file mode 100644
index 00000000..c0118967
--- /dev/null
+++ b/practices/cpp/level1/p03_SafeArray/safearray.h
@@ -0,0 +1,12 @@
+class SafeArray{
+	private:
+		int totalLength;
+		int *data;	
+	
+	public:
+		SafeArray();
+		~SafeArray();
+		void create(int length);
+		bool write(int index,int number);
+		int read(int index);
+};
diff --git a/practices/cpp/level1/p03_SafeArray/safearray_main.cpp b/practices/cpp/level1/p03_SafeArray/safearray_main.cpp
new file mode 100644
index 00000000..8f73e4ba
--- /dev/null
+++ b/practices/cpp/level1/p03_SafeArray/safearray_main.cpp
@@ -0,0 +1,11 @@
+#include<iostream>
+#include<safearray.h>
+using namespace std;
+
+int main()
+{
+	int length;
+	cin>>length;
+	SafeArray safearray;
+	safearray.create(length);
+ } 
diff --git a/practices/cpp/level1/p04_cppScoreManagement/CLASS.h b/practices/cpp/level1/p04_cppScoreManagement/CLASS.h
new file mode 100644
index 00000000..0579b778
--- /dev/null
+++ b/practices/cpp/level1/p04_cppScoreManagement/CLASS.h
@@ -0,0 +1,22 @@
+#ifndef CLASSES_H
+#define CLASSES_H
+
+#define MAXN 150
+class Classes
+{
+	private:
+		struct
+		{
+			char name[20];
+			char studentNumber[20];
+			int grade;
+		}student[151];
+		int totalNumber;
+	
+	public:
+		void showList();
+		void addStudent();
+		void deleteStudent();
+		void enteringGrade();
+};
+#endif 
diff --git a/practices/cpp/level1/p04_cppScoreManagement/class.cpp b/practices/cpp/level1/p04_cppScoreManagement/class.cpp
new file mode 100644
index 00000000..822e75ca
--- /dev/null
+++ b/practices/cpp/level1/p04_cppScoreManagement/class.cpp
@@ -0,0 +1,107 @@
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include "CLASS.h"
+
+void Classes::showList()
+{
+	for (int i=1;i<=totalNumber;i++)
+	{
+		if (student[i].name[0]!=0)
+		{
+			printf("%s   %s   %d\n",student[i].studentNumber,student[i].name,student[i].grade);		
+		}
+	}
+}
+		
+
+void Classes::deleteStudent()
+{
+	MAXN=150;
+	char tmpName[20],tmpNumber[20];
+	int order=0;
+	while(1)
+	{
+		if (totalNumber==0)
+		{
+			printf("Faliure!\n");
+			return;
+		}
+		loop:
+		printf("Input name & student number:");
+		scanf("%s %s",tmpName,tmpNumber);
+		for (int i=1;i<=totalNumber;i++)
+		{
+			if (strcmp(tmpName,student[i].studentNumber)==0)
+			{
+				totalNumber--;
+				student[i].name[0]=0;
+				goto loop; 
+			}
+		}
+		printf("Not Exist!\n");
+		printf("Continue？1=YES/0=NO\n");
+		scanf("%d",&order);
+		if (order==0)	break;
+	}
+}
+
+void Classes::enteringGrade(){
+	MAXN=150;
+	int tmpGrade=0,order=0;
+	char tmpName[20],tmpNumber[20];
+	while(1){
+		if (totalNumber==0){
+			printf("No info!\n");
+			return;
+		}
+		loop:
+		printf("Input Name & Number:");
+		scanf("%s %s",tmpName,tmpNumber);
+		for (int i=1;i<=totalNumber;i++){
+			if (strcmp(tmpName,student[i].studentNumber)==0){
+				printf("Input grade：");
+				scanf("%d",&tmpGrade);
+				student[i].grade=tmpGrade;
+				goto loop; 
+			}
+		}
+		printf("Not exist!\n");
+		printf("Continue？1=YES/0=NO\n");
+		scanf("%d",&order);
+		if (order==0)	break;
+	}
+}
+void Classes::addStudent(){
+	char tmpName[20],tmpNumber[20];
+	int order=0;
+	while(1)
+	{
+		if (totalNumber>=MAXN)
+		{
+			printf("Full!\n");
+			return;
+		}
+		loop:
+		printf("Input name&student number");
+		scanf("%s %s",tmpName,tmpNumber);
+		for (int i=1;i<=totalNumber;i++){
+			if (strcmp(tmpName,student[i].studentNumber)==0){
+				printf("Exists!\n");
+				goto loop; 
+			}
+		}
+		totalNumber++;
+		for (int i=1;i<=totalNumber;i++){
+			if (student[i].name[0]==0){
+				strcpy(student[i].name,tmpName);
+				strcpy(student[i].studentNumber,tmpNumber);
+				break;
+			}
+		}
+		printf("Continue？1=YES  0=NO\n");
+		scanf("%d",&order);
+		if (order==0)	break;
+	}
+}
+
diff --git a/practices/cpp/level1/p04_cppScoreManagement/main_class.cpp b/practices/cpp/level1/p04_cppScoreManagement/main_class.cpp
new file mode 100644
index 00000000..634b9643
--- /dev/null
+++ b/practices/cpp/level1/p04_cppScoreManagement/main_class.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <cstring>
+#include "Classes.h"
+using namespace std;
+
+int main()
+{
+	int a;
+	scanf("%d",a);
+	while(1)
+	{
+		
+		cout<<"1:showlist\n2:add student\n3:delete student\n4:entering"<<endl;
+		if(a==1){
+			showList();
+		}
+		if(a==2){
+			addStudent()
+		}
+		if(a==3){
+			deleteStudent();
+		};
+		if(a==4){
+			enteringGrade();
+		}
+		if(a==5){
+			break;
+		}
+	}
+	return 0;
+}

From e8385c5338890eba6b882930099e31ec7f9dbef1 Mon Sep 17 00:00:00 2001
From: derderking <525655072@qq.com>
Date: Mon, 1 May 2017 13:54:36 +0800
Subject: [PATCH 09/11] Third

---
 practices/c/level1/p09_maze/maze.c           |  97 ++++++++
 practices/c/level1/p10_pushBoxes/pushbox.c   | 226 +++++++++++++++++++
 practices/c/level1/p11_linkedList/link.c     | 148 ++++++++++++
 practices/c/level1/p12_warehouse/warehouse.c |  95 ++++++++
 4 files changed, 566 insertions(+)
 create mode 100644 practices/c/level1/p09_maze/maze.c
 create mode 100644 practices/c/level1/p10_pushBoxes/pushbox.c
 create mode 100644 practices/c/level1/p11_linkedList/link.c
 create mode 100644 practices/c/level1/p12_warehouse/warehouse.c

diff --git a/practices/c/level1/p09_maze/maze.c b/practices/c/level1/p09_maze/maze.c
new file mode 100644
index 00000000..24995966
--- /dev/null
+++ b/practices/c/level1/p09_maze/maze.c
@@ -0,0 +1,97 @@
+#include <stdio.h> 
+#include <time.h>
+#include <conio.h>
+#include <windows.h>
+#include <stdlib.h>
+
+int map[25][25] = {
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+	{ 2,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 },
+	{ 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0 },
+	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 },
+};
+int i, j;
+void print()
+{
+	for (i = 0; i < 25; i++)
+	{
+		for (j = 0; j < 25; j++)
+		{
+			if (map[i][j] == 1)
+				printf("#");
+			if (map[i][j] == 0)
+				printf(" ");
+			if (map[i][j] == 2)
+				printf("E");
+			if (j == 24)
+			{
+				printf("\n");
+			}
+		}
+	}
+}
+int main()
+{
+	print();
+	int m = 1, n = 0;
+	while (m!=24&&n!=23)
+	{
+		if (GetKeyState(VK_UP) < 0&& map[m - 1][n]==0)
+		{
+			map[m - 1][n] = 2;
+			map[m][n] = 0;
+			--m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_DOWN) < 0 && map[m + 1][n] == 0)
+		{
+			map[m + 1][n] = 2;
+			map[m][n] = 0;
+			++m;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_LEFT) < 0 && map[m][n-1] == 0)
+		{
+			map[m][n - 1] = 2;
+			map[m][n] = 0;
+			--n;
+			system("cls");
+			print();
+		}
+		if (GetKeyState(VK_RIGHT) < 0 && map[m][n+1] == 0)
+		{
+			map[m][n + 1] = 2;
+			map[m][n] = 0;
+			++n;
+			system("cls");
+			print();
+		}
+	}
+	system("cls");
+	printf("You win!");
+    return 0;
+}
+
diff --git a/practices/c/level1/p10_pushBoxes/pushbox.c b/practices/c/level1/p10_pushBoxes/pushbox.c
new file mode 100644
index 00000000..e6aa3c6c
--- /dev/null
+++ b/practices/c/level1/p10_pushBoxes/pushbox.c
@@ -0,0 +1,226 @@
+// pushbox.cpp : 定义控制台应用程序的入口点。
+
+
+#include "stdafx.h"
+#include <windows.h>
+int a[6][6];
+int i = 0, j = 0;
+int level;
+int levelNum = 0;
+int scan(int n,const char b[6])
+{
+	FILE* fp = fopen(b, "r");
+	if (fp == NULL)
+	{
+		printf("Files not found");
+		return -1;
+	}
+	for (i = 0; i<n; i++)
+	{
+		for (j = 0; j<n; j++)
+		{
+			fscanf(fp, "%d", &a[i][j]);
+		}
+		fscanf(fp, "\n");
+	}
+	fclose(fp);
+	return 0;
+}
+void choice()
+{
+	printf("Select the level:1-2\n");
+	scanf("%d", &levelNum);
+	if (levelNum == 1)
+	{
+		scan(6, "1.txt");
+	}
+	else if (levelNum == 2)
+	{
+		scan(6, "2.txt");
+	}
+	else
+	{
+		printf("Your Input is Wrong!");
+	}
+}
+void print()
+{
+	system("cls");
+	for (i = 0; i<6; i++)
+	{
+		for (j = 0; j<6; j++)
+		{
+			if (a[i][j] == 0)
+			{
+				printf("*");
+			}
+			else if (a[i][j] == 1)
+			{
+				printf(" ");
+			}
+			else if (a[i][j] == 3)
+			{
+				printf("M");
+			}
+			else if (a[i][j] == 4)
+			{
+				printf("B");
+			}
+			else if (a[i][j] == 5)
+			{
+				printf("D");
+			}
+			if (j == 5)
+			{
+				printf("\n");
+			}
+		}
+	}
+}
+int score = 1000;
+int m = 1, n = 2;
+int p = 1, q = 4;
+
+int main(int argc, char** argv) {
+	choice();
+	print();
+	while (1)
+	{
+		if (GetKeyState(VK_UP)<0 && (a[m - 1][n] == 1 || a[m - 1][n] == 4))
+		{
+			if (a[m - 1][n] == 1)
+			{
+				a[m - 1][n] = 3;
+				a[m][n] = 1;
+				--m;
+			}
+			else if (a[m - 1][n] == 4)
+			{
+				if (a[m - 2][n] == 1)
+				{
+					a[m - 2][n] = 4;
+					a[m - 1][n] = 3;
+					a[m][n] = 1;
+					--m;
+				}
+				else if (a[m - 2][n] == 5)
+				{
+					a[m - 2][n] = 4;
+					a[m - 1][n] = 3;
+					a[m][n] = 1;
+					--m;
+				}
+			}
+			if (a[2][4] == 1)
+			{
+				a[2][4] = 5;
+			}
+			print();
+		}
+
+		if (GetKeyState(VK_DOWN)<0 && (a[m + 1][n] == 1 || a[m + 1][n] == 4))
+		{
+			if (a[m + 1][n] == 1)
+			{
+				a[m + 1][n] = 3;
+				a[m][n] = 1;
+				++m;
+			}
+			else if (a[m + 1][n] == 4)
+			{
+				if (a[m + 2][n] == 1)
+				{
+					a[m + 2][n] = 4;
+					a[m + 1][n] = 3;
+					a[m][n] = 1;
+					++m;
+				}
+				else if (a[m + 2][n] == 5)
+				{
+					a[m + 2][n] = 4;
+					a[m + 1][n] = 3;
+					a[m][n] = 1;
+					++m;
+				}
+			}
+			if (a[2][4] == 1)
+			{
+				a[2][4] = 5;
+			}
+			print();
+		}
+
+		if (GetKeyState(VK_LEFT)<0 && (a[m][n - 1] == 1 || a[m][n - 1] == 4))
+		{
+			if (a[m][n - 1] == 1)
+			{
+				a[m][n - 1] = 3;
+				a[m][n] = 1;
+				--n;
+			}
+			else if (a[m][n - 1] == 4)
+			{
+				if (a[m][n - 2] == 1)
+				{
+					a[m][n - 2] = 4;
+					a[m][n - 1] = 3;
+					a[m][n] = 1;
+					--n;
+				}
+				else if (a[m][n - 2] == 5)
+				{
+					a[m][n-2] = 4;
+					a[m][n-1] = 3;
+					a[m][n] = 1;
+					--n;
+				}
+			}
+			if (a[2][4] == 1)
+			{
+				a[2][4] = 5;
+			}
+			print();
+		}
+
+		if (GetKeyState(VK_RIGHT)<0 && (a[m][n + 1] == 1 || a[m][n + 1] == 4))
+		{
+			if (a[m][n + 1] == 1)
+			{
+				a[m][n + 1] = 3;
+				a[m][n] = 1;
+				++n;
+			}
+			else if (a[m][n + 1] == 4)
+			{
+				if (a[m][n + 2] == 1)
+				{
+					a[m][n + 2] = 4;
+					a[m][n + 1] = 3;
+					a[m][n] = 1;
+					++n;
+				}
+				else if (a[m][n + 2] == 5)
+				{
+					a[m][n+2] = 4;
+					a[m][n+1] = 3;
+					a[m][n] = 1;
+					++n;
+				}
+			}
+			if (a[2][4] == 1)
+			{
+				a[2][4] = 5;
+			}
+			print();
+		}
+		Sleep(100);
+		if (a[1][4] != 5 && a[2][4] != 5 && a[2][4] != 3)
+		{
+			system("cls");
+			printf("You Win!\nYour score is %d\n",score);
+			return 0;
+		}
+		score--;
+	}
+	return 0;
+}
diff --git a/practices/c/level1/p11_linkedList/link.c b/practices/c/level1/p11_linkedList/link.c
new file mode 100644
index 00000000..6041889d
--- /dev/null
+++ b/practices/c/level1/p11_linkedList/link.c
@@ -0,0 +1,148 @@
+#include "stdafx.h"
+
+#include "stdlib.h"   
+
+#define LEN sizeof(struct student)  
+
+struct student
+{
+	int num;              //学号   
+	float value;          //分数，其他信息可以继续在下面增加字段  
+	struct student *next;       //指向下一节点的指针  
+};
+
+int n;
+int a[100] = { 0 };
+
+struct student *Create()
+{
+	struct student *head;       //头节点  
+	struct student *p1 = NULL;  //p1保存创建的新节点的地址  
+	struct student *p2 = NULL;  //p2保存原链表最后一个节点的地址  
+
+	n = 0;          //创建前链表的节点总数为0：空链表  
+	p1 = (struct student *) malloc(LEN);   //开辟一个新节点  
+	p2 = p1;            //如果节点开辟成功，则p2先把它的指针保存下来以备后用  
+
+	if (p1 == NULL)        //节点开辟不成功  
+	{
+		printf("\nCann't create it, try it again in a moment!\n");
+		return NULL;
+	}
+	else                //节点开辟成功  
+	{
+		head = NULL;        //开始head指向NULL  
+		printf("Please input %d node -- num,value: ", n + 1);
+		scanf("%d %f", &(p1->num), &(p1->value));    //录入数据  
+	}
+	while (p1->num != 0)      //只要学号不为0，就继续录入下一个节点  
+	{
+		n += 1;         //节点总数增加1个  
+		if (n == 1)      //如果节点总数是1，则head指向刚创建的节点p1  
+		{
+			head = p1;
+			p2->next = NULL;  //此时的p2就是p1,也就是p1->next指向NULL。  
+		}
+		else
+		{
+			p2->next = p1;   //指向上次下面刚刚开辟的新节点  
+		}
+
+		p2 = p1;            //把p1的地址给p2保留，然后p1产生新的节点  
+
+		p1 = (struct student *) malloc(LEN);
+		printf("Please input %d node -- num,value: ", n + 1);
+		scanf("%d %f", &(p1->num), &(p1->value));
+	}
+	p2->next = NULL;     //此句就是根据单向链表的最后一个节点要指向NULL  
+
+	free(p1);           //p1->num为0的时候跳出了while循环，并且释放p1  
+	p1 = NULL;          //特别不要忘记把释放的变量清空置为NULL,否则就变成"野指针"，即地址不确定的指针  
+	return head;        //返回创建链表的头指针   
+}
+
+struct student *reverse(struct student *head)
+{
+	struct student *p;      //临时存储  
+	struct student *p1;     //存储返回结果  
+	struct student *p2;     //源结果节点一个一个取  
+
+	p1 = NULL;          //开始颠倒时，已颠倒的部分为空  
+	p2 = head;          //p2指向链表的头节点  
+	while (p2 != NULL)
+	{
+		p = p2->next;
+		p2->next = p1;
+		p1 = p2;
+		p2 = p;
+	}
+	head = p1;
+	return head;
+}
+
+void search(int n,struct student *head)
+{
+	struct student *p1=head;
+	struct student *p2=head;
+	struct student *p;
+	int tot = 0;
+	while (p1!=NULL)
+	{
+		if (p1->value == n)
+		{
+			a[tot++]= p1->num;
+		}
+		p = p1;
+		p2 = p;
+		p1 = p2->next;
+	}
+	a[tot]=-1;
+}
+int main(int argc, char *argv[])
+{
+	struct student *head;
+	printf("Take turns to input the value\nIf you want to stop,input 0 0\n");
+	head = Create();
+	int judge;
+	while (1)
+	{
+		a[100] = { 0 };
+		int judge2 = 0, i = 0, number = 0;
+		printf("What do you what to do?\n1:Reverse  2:Search  -1:quit\n");
+		scanf("%d", &judge);
+		if (judge == 1)
+		{
+			head=reverse(head);
+			printf("Operation succeeded!");
+		}
+		else if (judge == 2)
+		{
+			printf("Input the number you want to search\n");
+			scanf("%d", &number);
+			search(number, head);
+			while (a[i] != -1&&a[i]!=0)
+			{
+				printf("No.%d's value is %d\n", a[i], number);
+				++i;
+				judge2 = 1;
+			}
+			if (judge2 == 0)
+			{
+				printf("-1\nComplete\n");
+			}
+			else
+			{
+				printf("Complete\n");
+			}
+		}
+		else if (judge == -1)
+		{
+			return 0;
+		}
+		else
+		{
+			printf("Input Error!\nPlease input again!\n");
+		}
+	}
+	return 0;
+}
\ No newline at end of file
diff --git a/practices/c/level1/p12_warehouse/warehouse.c b/practices/c/level1/p12_warehouse/warehouse.c
new file mode 100644
index 00000000..792c0ebd
--- /dev/null
+++ b/practices/c/level1/p12_warehouse/warehouse.c
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <conio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <windows.h>
+
+int n,m,v[1000];
+struct Data
+{
+	int num;
+	char name[10];
+};
+Data goods[1000],temp[1000];
+void loading();
+void saving(); 
+void working();
+int main()
+{
+	loading();
+	working();
+	saving();
+	return 0;
+}
+void loading()
+{
+	FILE *f=fopen("data.txt","r");
+	if(f==NULL)
+	{
+		printf("No data!\n");
+		return;
+	}
+	else 
+	{
+		fscanf(f,"%d",&n);
+		for (int i=1;i<=n;i++) 
+		{
+			fscanf(f,"%s %d",goods[i].name,&goods[i].num);
+		}
+	}
+	fclose(f);
+}
+void working()
+{
+	while (1) 
+	{
+		printf("1 show list\n");
+		printf("2 append\n");
+		printf("3 pop\n");
+		printf("4 exit\n");
+		char ch=getch();
+		if (ch<'1'||ch>'6')
+			continue;
+		int i,j,k=ch-'0';
+		if (k==1) {
+			for (i=1;i<=n;i++) 
+			{
+				printf("%d:%s %d\n",i,goods[i].name,goods[i].num);
+			}
+			Sleep(3000);
+		}
+	if (k==2) 
+	{
+		printf("Please input the number of goods you want to add:\n");
+		scanf("%d",&m); 
+		printf("Please input some goods:\n");
+		for (i=n+1;i<=n+m;i++)
+		{
+			scanf("%s %d",goods[i].name,&goods[i].num);
+		}
+		n+=m;
+	}
+	if (k==3) 
+	{
+		printf("Please input some goods:\n");
+
+			scanf("%d",&j);
+		for (i=1;i<=n-j;i++)
+		{
+			temp[j+i-1]=goods[j+i];
+			goods[j+i-1]=temp[j+i-1];
+		}
+	}
+	if (k==4)
+		break;
+	}
+}
+void saving()
+{
+		FILE *f=fopen("data.txt","w");
+	fprintf(f,"%d\n",n);
+	for (int i=1;i<=n;++i) {
+		fprintf(f,"%s %d\n",goods[i].name,goods[i].num);
+	}
+	fclose(f);
+}

From b8639255ca235f8084e43046929eaf475c5ed712 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Wed, 7 Jun 2017 18:43:15 +0800
Subject: [PATCH 10/11] homework

---
 practices/cpp/level1/p07_Circuit/Cell.cpp     | 42 ++++++++++++++++
 practices/cpp/level1/p07_Circuit/Cell.h       | 50 +++++++++++++++++++
 practices/cpp/level1/p07_Circuit/Circuit.cpp  | 25 ++++++++++
 practices/cpp/level1/p07_Circuit/Circuit.h    | 17 +++++++
 practices/cpp/level1/p07_Circuit/main.cpp     | 18 +++++++
 .../level1/p08_EmployeeAndSales/Employee.cpp  | 24 +++++++++
 .../level1/p08_EmployeeAndSales/Employee.h    | 25 ++++++++++
 .../cpp/level1/p08_EmployeeAndSales/main.cpp  | 12 +++++
 8 files changed, 213 insertions(+)
 create mode 100644 practices/cpp/level1/p07_Circuit/Cell.cpp
 create mode 100644 practices/cpp/level1/p07_Circuit/Cell.h
 create mode 100644 practices/cpp/level1/p07_Circuit/Circuit.cpp
 create mode 100644 practices/cpp/level1/p07_Circuit/Circuit.h
 create mode 100644 practices/cpp/level1/p07_Circuit/main.cpp
 create mode 100644 practices/cpp/level1/p08_EmployeeAndSales/Employee.cpp
 create mode 100644 practices/cpp/level1/p08_EmployeeAndSales/Employee.h
 create mode 100644 practices/cpp/level1/p08_EmployeeAndSales/main.cpp

diff --git a/practices/cpp/level1/p07_Circuit/Cell.cpp b/practices/cpp/level1/p07_Circuit/Cell.cpp
new file mode 100644
index 00000000..9bbec68f
--- /dev/null
+++ b/practices/cpp/level1/p07_Circuit/Cell.cpp
@@ -0,0 +1,42 @@
+#include "../include/Cell.h"
+
+Switch::Switch()
+{
+	isPassable = 0;
+	isSwitch = 1;
+}
+void Switch::turnon()
+{
+	this->isPassable = 1;
+}
+void Switch::turnoff()
+{
+	this->isPassable = 0;
+}
+
+Fan::Fan()
+{
+	isPassable = 1;
+	rotateSpeed = 10;
+	isSwitch = 0;
+}
+void Fan::turnon(){
+	isPassable = 1;
+}
+void Fan::turnoff(){
+	isPassable = 0;
+}
+
+Bulb::Bulb()
+{
+	isPassable = 1;
+	light = 10;
+	isSwitch = 0;
+}
+
+void Bulb::turnon(){
+	isPassable = 1;
+}
+void Bulb::turnoff(){
+	isPassable = 0;
+}
diff --git a/practices/cpp/level1/p07_Circuit/Cell.h b/practices/cpp/level1/p07_Circuit/Cell.h
new file mode 100644
index 00000000..9ab18352
--- /dev/null
+++ b/practices/cpp/level1/p07_Circuit/Cell.h
@@ -0,0 +1,50 @@
+#ifndef CELL_H
+#define CELL_H
+
+
+class Cell
+{
+	public:
+		Cell()
+		{
+			isPassable = 0;
+		}
+		virtual void turnon()=0;
+		virtual void turnoff()=0;
+		bool isSwitch;
+    protected:
+        bool isPassable;
+};
+
+class Switch : public Cell
+{
+    public:
+        Switch();
+        void turnon();
+        void turnoff();
+};
+
+
+class Fan : public Cell
+{
+    public:
+        Fan();
+        void turnon();
+        void turnoff();
+        int getRotateSpeed();
+	private:
+        int rotateSpeed;
+};
+
+class Bulb : public Cell
+{
+	public:
+		Bulb();
+		void turnon();
+		void turnoff();
+		int getLight();
+	private:
+		int light;
+};
+
+#endif // CELL_H
diff --git a/practices/cpp/level1/p07_Circuit/Circuit.cpp b/practices/cpp/level1/p07_Circuit/Circuit.cpp
new file mode 100644
index 00000000..59451dfd
--- /dev/null
+++ b/practices/cpp/level1/p07_Circuit/Circuit.cpp
@@ -0,0 +1,25 @@
+#include "Circuit.h"
+using namespace std;
+
+void Circuit::addCell(Cell* cell)
+{
+	Element.push_back(cell);
+}
+
+void Circuit::on()
+{
+	for(unsigned i=0;i != Element.size();i++)
+	{
+			Element[i]->turnon();
+	}
+}
+
+void Circuit::off()
+{
+	for(unsigned i=0;i != Element.size();i++)
+	{
+			Element[i]->turnoff();
+	}
+}
+
+
diff --git a/practices/cpp/level1/p07_Circuit/Circuit.h b/practices/cpp/level1/p07_Circuit/Circuit.h
new file mode 100644
index 00000000..60e49eab
--- /dev/null
+++ b/practices/cpp/level1/p07_Circuit/Circuit.h
@@ -0,0 +1,17 @@
+#ifndef CIRCUIT_H
+#define CIRCUIT_H
+#include "Cell.h"
+#include <vector>
+using namespace std;
+
+class Circuit
+{
+	public:
+		void addCell(Cell* cell);
+        void off();
+        void on();
+	private:
+		vector<Cell*> Element;
+};
+
+#endif // CIRCUIT_H
diff --git a/practices/cpp/level1/p07_Circuit/main.cpp b/practices/cpp/level1/p07_Circuit/main.cpp
new file mode 100644
index 00000000..8812fea1
--- /dev/null
+++ b/practices/cpp/level1/p07_Circuit/main.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include "Cell.h"
+#include "Circuit.h"
+using namespace std;
+
+
+
+int main()
+{
+	Circuit circuit;
+	Fan f1,f2;
+	Bulb b1,b2;
+	circuit.addCell(&f1);
+	circuit.addCell(&b2);
+	circuit.on();
+	circuit.off();
+	return 0;
+}
diff --git a/practices/cpp/level1/p08_EmployeeAndSales/Employee.cpp b/practices/cpp/level1/p08_EmployeeAndSales/Employee.cpp
new file mode 100644
index 00000000..1f82adff
--- /dev/null
+++ b/practices/cpp/level1/p08_EmployeeAndSales/Employee.cpp
@@ -0,0 +1,24 @@
+#include "Employee.h"
+
+Employee::Employee(int t_level=1)
+{
+	level = t_level;
+}
+
+double Employee::getSalary()
+{
+	salary = level * 1000;
+	return salary;
+}
+
+Sales::Sales(int t_level = 1,double t_salesValue = 6000)
+{
+	level = t_level;
+	salesValue = t_salesValue;
+}
+
+double Sales::getSalary()
+{
+	salary = salesValue*0.2 + level * 1000.0;
+	return salary;
+}
diff --git a/practices/cpp/level1/p08_EmployeeAndSales/Employee.h b/practices/cpp/level1/p08_EmployeeAndSales/Employee.h
new file mode 100644
index 00000000..b2db1809
--- /dev/null
+++ b/practices/cpp/level1/p08_EmployeeAndSales/Employee.h
@@ -0,0 +1,25 @@
+#ifndef EMPLOYEE_H
+#define EMPLOYEE_H
+#include<string>
+
+class Employee
+{
+	public:
+		Employee(int t_level);
+		std::string name;
+		unsigned age;
+		int level;
+		virtual double getSalary();
+	protected:
+		double salary;
+};
+
+class Sales : public Employee
+{
+	public:
+		Sales(int t_level,double t_salesValue);
+		double getSalary();
+	private:
+		double salesValue;
+};
+#endif // EMPLOYEE_H
diff --git a/practices/cpp/level1/p08_EmployeeAndSales/main.cpp b/practices/cpp/level1/p08_EmployeeAndSales/main.cpp
new file mode 100644
index 00000000..6f81451f
--- /dev/null
+++ b/practices/cpp/level1/p08_EmployeeAndSales/main.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+#include "Employee.h"
+using namespace std;
+
+int main()
+{
+	Sales s1 = Sales(5,6000);
+	Employee e1 = Employee(6);
+	double e1_salary = e1.getSalary();
+	double s1_salary = s1.getSalary();
+	cout<<e1_salary<<endl<<s1_salary<<endl;
+}

From 097e78e2e6e8131369057dfa4f9358d3603cb571 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Sun, 11 Jun 2017 21:59:22 +0800
Subject: [PATCH 11/11] fighter

---
 practices/cpp/level1/p09_Tree/Tree.cpp        |  55 +++
 practices/cpp/level1/p09_Tree/Tree.h          |  21 ++
 practices/cpp/level1/p09_Tree/main.cpp        |  14 +
 practices/cpp/level1/p11_Fighters/Bullet.cpp  |  11 +
 practices/cpp/level1/p11_Fighters/Bullet.h    |  16 +
 .../cpp/level1/p11_Fighters/Controller.cpp    |  21 ++
 .../cpp/level1/p11_Fighters/Controller.h      |   9 +
 practices/cpp/level1/p11_Fighters/Firer.cpp   |  13 +
 practices/cpp/level1/p11_Fighters/Firer.h     |   9 +
 .../cpp/level1/p11_Fighters/LoadTexture.cpp   |  22 ++
 .../cpp/level1/p11_Fighters/LoadTexture.h     | 321 ++++++++++++++++++
 practices/cpp/level1/p11_Fighters/Plane.cpp   |  67 ++++
 practices/cpp/level1/p11_Fighters/Plane.h     |   6 +
 practices/cpp/level1/p11_Fighters/Sky.cpp     | 165 +++++++++
 practices/cpp/level1/p11_Fighters/Sky.h       |  84 +++++
 practices/cpp/level1/p11_Fighters/main.cpp    |  84 +++++
 16 files changed, 918 insertions(+)
 create mode 100644 practices/cpp/level1/p09_Tree/Tree.cpp
 create mode 100644 practices/cpp/level1/p09_Tree/Tree.h
 create mode 100644 practices/cpp/level1/p09_Tree/main.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Bullet.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Bullet.h
 create mode 100644 practices/cpp/level1/p11_Fighters/Controller.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Controller.h
 create mode 100644 practices/cpp/level1/p11_Fighters/Firer.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Firer.h
 create mode 100644 practices/cpp/level1/p11_Fighters/LoadTexture.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/LoadTexture.h
 create mode 100644 practices/cpp/level1/p11_Fighters/Plane.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Plane.h
 create mode 100644 practices/cpp/level1/p11_Fighters/Sky.cpp
 create mode 100644 practices/cpp/level1/p11_Fighters/Sky.h
 create mode 100644 practices/cpp/level1/p11_Fighters/main.cpp

diff --git a/practices/cpp/level1/p09_Tree/Tree.cpp b/practices/cpp/level1/p09_Tree/Tree.cpp
new file mode 100644
index 00000000..606ca1ad
--- /dev/null
+++ b/practices/cpp/level1/p09_Tree/Tree.cpp
@@ -0,0 +1,55 @@
+#include "Tree.h"
+#define NULL 0
+Tree::Tree()
+{
+	sonNode = NULL;
+	brotherNode = NULL;
+}
+
+
+Tree::Tree(int tvalue)
+{
+	value = tvalue;
+	sonNode = NULL;
+	brotherNode = NULL;
+}
+
+Tree::~Tree()
+{
+	if(this != NULL)
+	{
+		delete this;
+	}
+}
+void Tree::appendSon(int tvalue)
+{
+	this->sonNode = new Tree;
+	sonNode->value = tvalue;
+	sonNode->brotherNode = NULL;
+	sonNode->sonNode = NULL;
+}
+
+void Tree::appendBrother(int tvalue)
+{
+	this->brotherNode = new Tree;
+	brotherNode->value = tvalue;
+	brotherNode->brotherNode = NULL;
+	brotherNode->sonNode = NULL;
+}
+
+int Tree::calculate()
+{
+	int sum = 0;
+	Tree* tNode = this->sonNode;
+	while(tNode)
+	{
+		sum++;
+		tNode = tNode->sonNode;
+	}
+	return sum;
+}
+
+int Tree::getValue()
+{
+	return value;
+}
diff --git a/practices/cpp/level1/p09_Tree/Tree.h b/practices/cpp/level1/p09_Tree/Tree.h
new file mode 100644
index 00000000..688b9043
--- /dev/null
+++ b/practices/cpp/level1/p09_Tree/Tree.h
@@ -0,0 +1,21 @@
+#ifndef TREE_H
+#define TREE_H
+
+
+class Tree
+{
+	public:
+		Tree();
+		Tree(int tvalue);
+		~Tree();
+		Tree* sonNode;
+		Tree* brotherNode;
+		void appendSon(int tvalue);
+		void appendBrother(int tvalue);
+		int calculate();
+		int getValue();
+	private:
+		int value;
+};
+
+#endif // TREE_H
diff --git a/practices/cpp/level1/p09_Tree/main.cpp b/practices/cpp/level1/p09_Tree/main.cpp
new file mode 100644
index 00000000..b3b75bb0
--- /dev/null
+++ b/practices/cpp/level1/p09_Tree/main.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include "Tree.h"
+using namespace std;
+
+int main()
+{
+	Tree root = Tree(0);
+	root.appendSon(15);
+	root.appendBrother(20);
+	root.sonNode->appendSon(10);
+	int sum = root.calculate();
+	cout<<sum<<endl;
+	return 0;
+}
diff --git a/practices/cpp/level1/p11_Fighters/Bullet.cpp b/practices/cpp/level1/p11_Fighters/Bullet.cpp
new file mode 100644
index 00000000..d35744f9
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Bullet.cpp
@@ -0,0 +1,11 @@
+#include "Bullet.h"
+Bullet::Bullet(int type){
+	this->type = type;
+}
+int Bullet::getType(){
+	return type;
+}
+Bullet::Bullet(const Bullet& bullet){
+	this->type = bullet.type;
+	this->setTexture(*bullet.getTexture());
+}
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Bullet.h b/practices/cpp/level1/p11_Fighters/Bullet.h
new file mode 100644
index 00000000..6c12eda3
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Bullet.h
@@ -0,0 +1,16 @@
+#ifndef BULLET_H
+#define BULLET_H
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+#define HERO_BULLET 1
+#define ENEMY_BULLET 2
+class Bullet:public sf::Sprite{
+public:
+	Bullet(){};
+	Bullet(const Bullet& bullet);
+	Bullet(int type);
+	int getType();
+private:
+	int type;
+};
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Controller.cpp b/practices/cpp/level1/p11_Fighters/Controller.cpp
new file mode 100644
index 00000000..384ee9cb
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Controller.cpp
@@ -0,0 +1,21 @@
+#include "Controller.h"
+
+void Controller::control(Plane &plane){
+	if((sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) && (plane.getPosition().y - plane.getTexture()->getSize().y / 2 > 0)){
+		plane.move(0, -SPEED);
+	}
+	if((sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) && (plane.getPosition().y + plane.getTexture()->getSize().y / 2 < 800)){
+		plane.move(0, SPEED);
+	}
+
+	if((sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) && (plane.getPosition().x - plane.getTexture()->getSize().x / 2 > 0)){
+		plane.move(-SPEED, 0);
+	}
+
+	if((sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) && (plane.getPosition().x + plane.getTexture()->getSize().x / 2 < 480)){
+		plane.move(SPEED, 0);
+	}
+	if(sf::Keyboard::isKeyPressed(sf::Keyboard::Space)){
+		plane.fire();
+	}
+}
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Controller.h b/practices/cpp/level1/p11_Fighters/Controller.h
new file mode 100644
index 00000000..4a20731b
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Controller.h
@@ -0,0 +1,9 @@
+#ifndef CONTROLLER_H
+#define CONTROLLER_H
+#include "Sky.h"
+#define SPEED 5
+class Controller{
+public:
+	void control(Plane &plane);
+};
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Firer.cpp b/practices/cpp/level1/p11_Fighters/Firer.cpp
new file mode 100644
index 00000000..2dab55e1
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Firer.cpp
@@ -0,0 +1,13 @@
+#include "Sky.h"
+
+Firer::Firer(Sky &sky , LoadTexture &loadtexture){
+	this->sky = &sky;
+	this->loadtexture = &loadtexture;
+}
+void Firer::fire(sf::Vector2f position , int type){
+	bullet = new Bullet(type);
+	bullet->setTexture(*loadtexture->getTextureByName("bullet2"));
+	bullet->setOrigin(bullet->getTexture()->getSize().x / 2 ,bullet->getTexture()->getSize().y / 2);
+	bullet->setPosition(position);
+	sky->add(bullet);
+}
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Firer.h b/practices/cpp/level1/p11_Fighters/Firer.h
new file mode 100644
index 00000000..f74df0fd
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Firer.h
@@ -0,0 +1,9 @@
+#ifndef FIRER_H
+#define FIRER_H
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+#include "LoadTexture.h"
+// xun huan yinyong priblem
+// move the content to sky.h
+
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/LoadTexture.cpp b/practices/cpp/level1/p11_Fighters/LoadTexture.cpp
new file mode 100644
index 00000000..8f9a32d9
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/LoadTexture.cpp
@@ -0,0 +1,22 @@
+#include "LoadTexture.h"
+
+void LoadTexture::loadFromFile(string path){
+	initLoad();
+	sf::Image image;
+	sf::Texture *texture;
+	image.loadFromFile(path);
+	for (int i = 0 ; i < imageVector.size() ; i ++){
+		sf::IntRect r(imageVector.at(i)->position[0] , imageVector.at(i)->position[1] , imageVector.at(i)->position[2] , imageVector.at(i)->position[3]);
+		texture = new sf::Texture();
+		texture->loadFromImage(image , r);
+		textureVector.push_back(texture);
+	}
+}
+sf::Texture* LoadTexture::getTextureByName(string name){
+	for (int i = 0 ; i < imageVector.size() ; i++){
+		if (imageVector.at(i)->name == name){
+			return textureVector.at(i);
+		}
+	}
+	std::cout<<"no texture matched!\n";
+}
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/LoadTexture.h b/practices/cpp/level1/p11_Fighters/LoadTexture.h
new file mode 100644
index 00000000..b6dfcbe0
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/LoadTexture.h
@@ -0,0 +1,321 @@
+#ifndef LOADTEXTURE_H
+#define LOADTEXTURE_H
+#include <string>
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+#include <vector>
+#include <iostream>
+using namespace std;
+struct Position{
+	string name;
+	int position[4];
+};
+typedef struct Position ImagePosition;
+
+class LoadTexture{
+	public:
+		void loadFromFile(string path);
+		sf::Texture* getTextureByName(string name);
+		void initLoad(){
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down6";
+imagePosition -> position[0] = 0;
+imagePosition -> position[1] = 747;
+imagePosition -> position[2] = 166;
+imagePosition -> position[3] = 261;
+imageVector.push_back(imagePosition);
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_hit";
+imagePosition -> position[0] = 166;
+imagePosition -> position[1] = 750;
+imagePosition -> position[2] = 169;
+imagePosition -> position[3] = 258;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_n1";
+imagePosition -> position[0] = 335;
+imagePosition -> position[1] = 750;
+imagePosition -> position[2] = 169;
+imagePosition -> position[3] = 258;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_n2";
+imagePosition -> position[0] = 504;
+imagePosition -> position[1] = 750;
+imagePosition -> position[2] = 169;
+imagePosition -> position[3] = 258;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down1";
+imagePosition -> position[0] = 0;
+imagePosition -> position[1] = 486;
+imagePosition -> position[2] = 165;
+imagePosition -> position[3] = 261;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down2";
+imagePosition -> position[0] = 0;
+imagePosition -> position[1] = 225;
+imagePosition -> position[2] = 165;
+imagePosition -> position[3] = 261;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down5";
+imagePosition -> position[0] = 673;
+imagePosition -> position[1] = 748;
+imagePosition -> position[2] = 166;
+imagePosition -> position[3] = 260;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down3";
+imagePosition -> position[0] = 839;
+imagePosition -> position[1] = 748;
+imagePosition -> position[2] = 165;
+imagePosition -> position[3] = 260;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy3_down4";
+imagePosition -> position[0] = 165;
+imagePosition -> position[1] = 486;
+imagePosition -> position[2] = 165;
+imagePosition -> position[3] = 261;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero1";
+imagePosition -> position[0] = 0;
+imagePosition -> position[1] = 99;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero2";
+imagePosition -> position[0] = 165;
+imagePosition -> position[1] = 360;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero_blowup_n1";
+imagePosition -> position[0] = 165;
+imagePosition -> position[1] = 234;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero_blowup_n2";
+imagePosition -> position[0] = 330;
+imagePosition -> position[1] = 624;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero_blowup_n3";
+imagePosition -> position[0] = 330;
+imagePosition -> position[1] = 498;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "hero_blowup_n4";
+imagePosition -> position[0] = 432;
+imagePosition -> position[1] = 624;
+imagePosition -> position[2] = 102;
+imagePosition -> position[3] = 126;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2";
+imagePosition -> position[0] = 0;
+imagePosition -> position[1] = 0;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 99;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2_hit";
+imagePosition -> position[0] = 432;
+imagePosition -> position[1] = 525;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 99;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "ufo2";
+imagePosition -> position[0] = 102;
+imagePosition -> position[1] = 118;
+imagePosition -> position[2] = 60;
+imagePosition -> position[3] = 107;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2_down1";
+imagePosition -> position[0] = 534;
+imagePosition -> position[1] = 655;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 95;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2_down2";
+imagePosition -> position[0] = 603;
+imagePosition -> position[1] = 655;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 95;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2_down3";
+imagePosition -> position[0] = 672;
+imagePosition -> position[1] = 653;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 95;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy2_down4";
+imagePosition -> position[0] = 741;
+imagePosition -> position[1] = 653;
+imagePosition -> position[2] = 69;
+imagePosition -> position[3] = 95;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "ufo1";
+imagePosition -> position[0] = 267;
+imagePosition -> position[1] = 398;
+imagePosition -> position[2] = 58;
+imagePosition -> position[3] = 88;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "bomb";
+imagePosition -> position[0] = 810;
+imagePosition -> position[1] = 691;
+imagePosition -> position[2] = 63;
+imagePosition -> position[3] = 57;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy1_down1";
+imagePosition -> position[0] = 267;
+imagePosition -> position[1] = 347;
+imagePosition -> position[2] = 57;
+imagePosition -> position[3] = 51;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy1_down2";
+imagePosition -> position[0] = 873;
+imagePosition -> position[1] = 697;
+imagePosition -> position[2] = 57;
+imagePosition -> position[3] = 51;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy1_down3";
+imagePosition -> position[0] = 267;
+imagePosition -> position[1] = 296;
+imagePosition -> position[2] = 57;
+imagePosition -> position[3] = 51;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy1_down4";
+imagePosition -> position[0] = 930;
+imagePosition -> position[1] = 697;
+imagePosition -> position[2] = 57;
+imagePosition -> position[3] = 51;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "game_pause_nor";
+imagePosition -> position[0] = 267;
+imagePosition -> position[1] = 251;
+imagePosition -> position[2] = 60;
+imagePosition -> position[3] = 45;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "game_pause_pressed";
+imagePosition -> position[0] = 810;
+imagePosition -> position[1] = 646;
+imagePosition -> position[2] = 60;
+imagePosition -> position[3] = 45;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "enemy1";
+imagePosition -> position[0] = 534;
+imagePosition -> position[1] = 612;
+imagePosition -> position[2] = 57;
+imagePosition -> position[3] = 43;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "bullet1";
+imagePosition -> position[0] = 1004;
+imagePosition -> position[1] = 987;
+imagePosition -> position[2] = 9;
+imagePosition -> position[3] = 21;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+imagePosition = new ImagePosition;
+imagePosition -> name = "bullet2";
+imagePosition -> position[0] = 69;
+imagePosition -> position[1] = 78;
+imagePosition -> position[2] = 9;
+imagePosition -> position[3] = 21;
+if (imagePosition != NULL){
+	imageVector.push_back(imagePosition);
+}
+}
+	private:
+		vector<sf::Texture *> textureVector;
+		vector<ImagePosition*> imageVector;
+		ImagePosition* imagePosition;
+};
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Plane.cpp b/practices/cpp/level1/p11_Fighters/Plane.cpp
new file mode 100644
index 00000000..3b1796d2
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Plane.cpp
@@ -0,0 +1,67 @@
+#include "Sky.h"
+#include "math.h"
+Plane::Plane(int type){
+	ifStop = false;
+	ifKilled = false;
+	this->type = type;
+	planeClock.restart();
+	bulletSoundBuffer.loadFromFile("resource/sounds/bullet.ogg");
+	bulletSound.setBuffer(bulletSoundBuffer);
+	nowTexture = 0;
+	downSoundbuffer.loadFromFile("resource/sounds/enemy1_down.ogg");
+	downSound.setBuffer(downSoundbuffer);
+}
+void Plane::fire(){
+	if((planeClock.getElapsedTime().asSeconds() > sf::seconds(0.2f).asSeconds()) || (this->type != HERO)){
+		planeFirer->fire(this->getPosition() , this->getType());
+		planeClock.restart();
+		bulletSound.play();
+	}
+}
+int Plane::getType(){
+	return type;
+}
+void Plane::setFirer(Firer &firer){
+	this->planeFirer = &firer;
+}
+void Plane::kill(Sky *sky){
+	ifKilled = true;
+	textureClock.restart();
+	this->setTexture(*textureVector->at(0));
+	downSound.play();
+}
+bool Plane::ifCouldErase(){
+	if(ifStop && ifKilled){
+		return true;
+	}else{
+		return false;
+	}
+}
+bool Plane::ifkill(){
+	return ifKilled;
+}
+void Plane::moveThis(){
+	if (this->type == ENEMY_1){
+		if (this->ifKilled){
+			if (textureClock.getElapsedTime().asSeconds() > sf::seconds(timePerTexture).asSeconds()){
+				nowTexture ++;
+				textureClock.restart();
+				if (nowTexture > 3){
+					ifStop = true;
+					return;
+				}
+				this->setTexture(*textureVector->at(nowTexture));
+				return;
+			}
+			return;
+		}
+		this->move(0 , 3);
+	}
+}
+void Plane::setTextureVector(std::vector<sf::Texture*> *v){
+	this->textureVector = v;
+}
+void Plane::setTimePerTexture(float time){
+	timePerTexture = time;
+}
+
diff --git a/practices/cpp/level1/p11_Fighters/Plane.h b/practices/cpp/level1/p11_Fighters/Plane.h
new file mode 100644
index 00000000..0b9f16aa
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Plane.h
@@ -0,0 +1,6 @@
+#ifndef PLANE_H
+#define PLANE_H
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+// move the content to sky.h
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/Sky.cpp b/practices/cpp/level1/p11_Fighters/Sky.cpp
new file mode 100644
index 00000000..5cb86b65
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Sky.cpp
@@ -0,0 +1,165 @@
+#include "Sky.h"
+Sky::Sky(){
+	score = 0;
+	level = 1;
+	ss_Score.str("");
+	ss_Score << score;
+	string_Score = ss_Score.str();
+	text_Score.setString("Score : " + string_Score);
+	font.loadFromFile("resource/fonts/myTTF.ttf");
+	text_Score.setFont(font);
+	text_Score.setPosition(5, 5);
+	text_Score.setColor(sf::Color::Black);
+	text_Score.setCharacterSize(24);
+
+	text_Level.setFont(font);
+	text_Level.setPosition((480 / 2) - 34 * 2 , 800 / 2);
+	text_Level.setColor(sf::Color::Black);
+	text_Level.setCharacterSize(34);
+	levelClock.restart();
+	backgroundClock.restart();
+	ifStart = false;
+}
+void Sky::add(sf::Sprite &sprite){
+	if(((Plane*)(&sprite))->getType() == HERO){
+		//std::cout << "add Plane\n";
+		spriteVector.push_back(&sprite);
+		return;
+	}
+	if(((Plane*)(&sprite))->getType() == ENEMY_1){
+		//std::cout << "add enemy\n";
+		enemy_1Vector.push_back(&sprite);
+		return;
+	}
+	animationVector.push_back(&sprite);
+	//std::cout << "add other\n";
+}
+void Sky::add(Bullet *bullet){
+	if (bullet->getType() == HERO_BULLET){
+		std::cout << "add hero bullet\n";
+		herobulletVector.push_back(bullet);
+		return;
+	}
+	if (bullet->getType() == ENEMY_BULLET){
+		std::cout << "add enemy bullet\n";
+		enemybulletVector.push_back(bullet);
+		return;
+	}
+}
+
+void Sky::draw(sf::RenderWindow &window){
+	// move all
+	this->moveAll();
+	// check
+	check();
+	// draw the hero
+	for (int i = 0 ; i != spriteVector.size() ; i ++){
+		window.draw(*spriteVector.at(i));
+	}
+	// draw the hero bullet
+	for (int i = 0 ; i != herobulletVector.size() ; i ++){
+		window.draw(*herobulletVector.at(i));
+	}
+	// draw the enemy
+	for (int i = 0 ; i != enemy_1Vector.size() ; i ++){
+		window.draw(*enemy_1Vector.at(i));
+	}
+	// draw enemy bullet
+	for (int i = 0 ; i != enemybulletVector.size() ; i ++){
+		window.draw(*enemybulletVector.at(i));
+	}
+	// draw the score
+	window.draw(text_Score);
+	// draw the level
+	if (levelClock.getElapsedTime().asSeconds() < sf::seconds(1.5f).asSeconds()){
+		window.draw(text_Level);
+	}
+
+
+}
+void Sky::moveAll(){
+	// move hero bullets
+	int i = 0;
+	while (i < herobulletVector.size()){
+		if(herobulletVector.at(i)->getPosition().y + herobulletVector.at(i)->getTexture()->getSize().y / 2 < 0){
+			// erase the bullet
+			delete herobulletVector.at(i);
+			herobulletVector.erase(herobulletVector.begin() + i);
+			continue;
+		}
+		herobulletVector.at(i)->move(0, -5);
+		i ++;
+	}
+	// move enemybullet
+	i = 0;
+	while (i < enemybulletVector.size()){
+		if(enemybulletVector.at(i)->getPosition().y - enemybulletVector.at(i)->getTexture()->getSize().y / 2 > 800){
+			// erase the bullet
+			delete enemybulletVector.at(i);
+			enemybulletVector.erase(enemybulletVector.begin() + i);
+			continue;
+		}
+		enemybulletVector.at(i)->move(0 , 5);
+		i++;
+	}
+	// move enemy
+	i = 0;
+	while(i < enemy_1Vector.size()){
+		if((enemy_1Vector.at(i)->getPosition().y - enemy_1Vector.at(i)->getTexture()->getSize().y / 2 > 800)||(((Plane*)enemy_1Vector.at(i))->ifCouldErase())){
+			// erase the enemy
+			delete enemy_1Vector.at(i);
+			enemy_1Vector.erase(enemy_1Vector.begin()+i);
+			continue;
+		}
+		((Plane*)enemy_1Vector.at(i))->moveThis();
+		i ++;
+	}
+}
+void Sky::check(){
+	int i = 0;
+	bool tmp = false;
+	while(i < herobulletVector.size()){
+		for(int j = 0 ; j < enemy_1Vector.size() ; j ++){
+			if (herobulletVector.at(i)->getGlobalBounds().intersects(enemy_1Vector.at(j)->getGlobalBounds()) && !((Plane*)enemy_1Vector.at(j))->ifkill()){
+				// kill the enemy
+				((Plane*)enemy_1Vector.at(j))->kill(this);
+				delete herobulletVector.at(i);
+				herobulletVector.erase(herobulletVector.begin() + i);
+				tmp = true;
+				score += 10;
+				ss_Score.str("");
+				ss_Score << score;
+				string_Score = ss_Score.str();
+				text_Score.setString("Score : " + string_Score);
+				if(level != (score / 100) + 1){
+					// change the level
+					level = score / 100 + 1;
+					ss_Level.str("");
+				ss_Level << level;
+				string_Level = ss_Level.str();
+				text_Level.setString("Level " + string_Level);
+				levelClock.restart();
+				}
+				break;
+			}
+		}
+		if (tmp){
+			tmp = false;
+			continue;
+		}
+		i++;
+	}
+}
+int Sky::getLevel(){
+	return level;
+}
+void Sky::guiChu(){
+	if (ifStart){
+		if (backgroundStartClock.getElapsedTime().asSeconds() > sf::seconds(0.5f).asSeconds()){
+			ifStart = false;
+			backgroundClock.restart();
+			return;
+		}
+
+	}
+}
diff --git a/practices/cpp/level1/p11_Fighters/Sky.h b/practices/cpp/level1/p11_Fighters/Sky.h
new file mode 100644
index 00000000..35e270ff
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/Sky.h
@@ -0,0 +1,84 @@
+#ifndef SKY_H
+#define SKY_H
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+#include "Bullet.h"
+#include <vector>
+#include "Plane.h"
+#include "LoadTexture.h"
+#include <iostream>
+#include <sstream>
+// Sky Class
+class Sky{
+public:
+	Sky();
+	void add(sf::Sprite &sprite);
+	void add(Bullet *bullet);
+	void draw(sf::RenderWindow &window);
+	int getLevel();
+private:
+	void moveAll();
+	void check();
+	std::vector<sf::Sprite *> spriteVector;
+	std::vector<Bullet*> herobulletVector;
+	std::vector<Bullet*> enemybulletVector;
+	std::vector<sf::Sprite *> enemy_1Vector;
+	std::vector<sf::Sprite *> animationVector;
+	sf::Sprite* enemyNum[100];
+	int score;
+	int level;
+	sf::Text text_Score;
+	std::string string_Score;
+	std::stringstream ss_Score;
+	sf::Font font;
+	sf::Clock levelClock;
+	sf::Text text_Level;
+	std::string string_Level;
+	std::stringstream ss_Level;
+	sf::Clock backgroundClock;
+	sf::Clock backgroundStartClock;
+	void guiChu();
+	bool ifStart;
+};
+// Firer class
+class Firer{
+public:
+	Firer(Firer &firer);
+	Firer(Sky &sky , LoadTexture &loadtexture);
+	void fire(sf::Vector2f positon , int type);
+private:
+	Bullet *bullet;
+	Sky *sky;
+	LoadTexture *loadtexture;
+};
+// Plane class
+#define HERO 1
+#define ENEMY_1 2
+class Plane:public sf::Sprite{
+public:
+	Plane(int type);
+	void setFirer(Firer &firer);
+	void fire();
+	int getType();
+	void kill(Sky *sky);
+	bool ifCouldErase();
+	bool ifkill();
+	void moveThis();
+	void setTextureVector(std::vector<sf::Texture*> *v);
+	void setTimePerTexture(float time);
+private:
+	sf::Clock planeClock;
+	int type;
+	Firer *planeFirer;
+	sf::Sound bulletSound;
+	sf::SoundBuffer bulletSoundBuffer;
+	bool ifStop;
+	bool ifKilled;
+	int nowTexture;
+	std::vector<sf::Texture*> *textureVector;
+	sf::Clock textureClock;
+	float timePerTexture;
+	sf::SoundBuffer downSoundbuffer;
+	sf::Sound downSound;
+};
+#endif
\ No newline at end of file
diff --git a/practices/cpp/level1/p11_Fighters/main.cpp b/practices/cpp/level1/p11_Fighters/main.cpp
new file mode 100644
index 00000000..2688587c
--- /dev/null
+++ b/practices/cpp/level1/p11_Fighters/main.cpp
@@ -0,0 +1,84 @@
+#include <SFML/Graphics.hpp>
+#include <SFML/Audio.hpp>
+#include "Sky.h"
+#include "LoadTexture.h"
+#include "Plane.h"
+#include "Controller.h"
+#include "Bullet.h"
+#include "Firer.h"
+int main(void){
+	// the score
+	// the clock to control the enemy
+	sf::Clock enemyClock;
+	enemyClock.restart();
+	// the window
+	sf::RenderWindow window(sf::VideoMode(480 , 800) , "fighters");
+	window.setFramerateLimit(60);
+	// background music
+	sf::Music backgroundMusic;
+	backgroundMusic.openFromFile("resource/sounds/background.ogg");
+	backgroundMusic.setLoop(true);
+	//backgroundMusic.setVolume(20);
+	backgroundMusic.play();
+	// background
+	sf::Sprite backgroundSprite;
+	sf::Texture backgroundTexture;
+	backgroundTexture.loadFromFile("resource/background.png");
+	backgroundSprite.setTexture(backgroundTexture);
+	// sky
+	Sky sky;
+	sky.add(backgroundSprite);
+	// loadtexture
+	LoadTexture loadtexture;
+	loadtexture.initLoad();
+	loadtexture.loadFromFile("resource/shoot.png");
+	// firer
+	Firer firer(sky , loadtexture);
+	// hero
+	Plane hero(HERO);
+	hero.setTexture(*loadtexture.getTextureByName("hero2"));
+	// set hero position
+	hero.setOrigin(hero.getTexture()->getSize().x / 2 , hero.getTexture()->getSize().y / 2);
+	hero.setPosition(window.getSize().x / 2, window.getSize().y - hero.getTexture()->getSize().y / 2);
+	hero.setFirer(firer);
+	sky.add(hero);
+	// the controller
+	Controller controller;
+	// the enemy_1 pointer
+	Plane *enemy;
+	// the enemy_1 vector
+	std::vector<sf::Texture*> enemy_1TextureVector;
+	enemy_1TextureVector.push_back(loadtexture.getTextureByName("enemy1_down1"));
+	enemy_1TextureVector.push_back(loadtexture.getTextureByName("enemy1_down2"));
+	enemy_1TextureVector.push_back(loadtexture.getTextureByName("enemy1_down3"));
+	enemy_1TextureVector.push_back(loadtexture.getTextureByName("enemy1_down4"));
+	// the loop
+	while (window.isOpen()){
+		sf::Event event;
+		while (window.pollEvent(event)){
+			if (event.type == sf::Event::Closed){
+				window.close();
+			}
+		}
+		// random add enemy
+		if((enemyClock.getElapsedTime().asSeconds() > sf::seconds(1.0f).asSeconds()))
+		{
+			enemy = new Plane(ENEMY_1);
+			enemy->setTexture(*loadtexture.getTextureByName("enemy1"));
+			enemy->setOrigin(enemy->getTexture()->getSize().x / 2, enemy->getTexture()->getSize().y / 2);
+			enemy->setFirer(firer);
+			enemy->setTimePerTexture(0.05f);
+			int a = 480- int(hero.getTexture()->getSize().x / 2), b = int(hero.getTexture()->getSize().x / 2);
+			enemy->setPosition((rand()%(b-a+1)+b), 0);
+			enemy->setTextureVector(&enemy_1TextureVector);
+			sky.add(*enemy);
+			enemy->fire();
+			enemyClock.restart();
+		}
+		window.clear();
+		window.draw(backgroundSprite);
+		controller.control(hero);
+		sky.draw(window);
+		window.display();
+	}
+}