ESC-18104/18105 Programming for Problem Solving

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Name - Akshat Gupta

CRN - 1915368

Branch - CSE C2

Submitted to - Ms. Goldendeep Kaur

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1) To print name.

C /* Program to print your name */

#include<stdio.h> int main() {

puts("~~~~~~~~~~~~~~"); puts("Akshat"); puts("~~~~~~~~~~~~~~");

return 0; }

Result:

2) To print College address.

C /* College Address */

#include<stdio.h> int main() {

printf("\n\t\t\t -Guru Nanak Dev Engineering College,"); printf("\n\t\t\t -Gill Road,"); printf("\n\t\t\t -Ludhiana , Punjab\n");

return 0; }

Result:

3) Program to add two integers.

C /* To add two integers */

#include <stdio.h> int main() {

int a,b;

printf("\nEnter the numbers....");

printf("\nA:"); scanf("%d",&a);

printf("\nB:"); scanf("%d",&b);

a=a+b;

printf("\n Sum of the number is %d \n",a);

return 0;

}

Result:

4) Program to find quotient and remainder.

C /* To find quotient and remainder */

#include <stdio.h>

int main() {

int a,b,r,q;

printf("\nEnter the Dividend: "); scanf("%d",&a);

printf("\nEnter the divisor: "); scanf("%d",&b);

r=a%b; q=a/b;

printf("\nRemainder: %d",r); printf("\nQuotient: %d \n",q);

return 0; }

Result :

5) Program to swap two variables without 3rd variable.

C /* Swapping without 3rd variable */

#include <stdio.h> int main() {

int a,b;

printf("Enter the value of A: "); scanf("%d",&a);

printf("Enter the value of B: "); scanf("%d",&b);

a = a + b; b = a - b; a = a - b;

printf("\nA: %d",a); printf("\nB: %d"\n,b);

return 0; }

Result:

6) Program to check even odd number.

C /* To find whether number is even or odd */

#include<stdio.h> int main() {

int num;

printf("Enter the Number:"); scanf("%d",&num);

if(num%2==0) printf("\nNumber is Even");

else printf("\nNumber is Odd\n");

printf("\n"); return 0; }

Result:

7) Finding greteast of two numbers.

C /* Largest one in two */

#include<stdio.h>

int main() { int a,b; printf("Enter any two number(A and B): "); scanf("%d%d", &a,&b);

if(a>b) printf("\nA is largest"); else printf("\nB is largest\n");

return 0; }

Result:

8) Find greatest of three number .

C /* Largest of three number */

#include<stdio.h> int main() { int x, y, z, large;

printf(" Enter any three integer numbers for x, y, z : ") ;

scanf("%d %d %d", &x, &y, &z) ;

large = (x > y ? ( x > z ? x : z) : (y > z ? y : z)) ;

printf("\n\n Largest or biggest or greatest or maximum among 3 numbers using Conditional ternary Operator : %d", large) ;

return 0; }

Result:

9) Program to assign grade to student according to percentage.

C /* To find grade of a student by marks */

#include<stdio.h> int main() {

int s1,s2,s3,s4,s5,agg; float perc;

printf("Enter the Marks in 5 Subjects Respectively:\n");

scanf("%d%d%d%d%d",&s1,&s2,&s3,&s4,&s5);

agg=s1+s2+s3+s4+s5; // Aggregate Marks

perc=agg/500.0*100; // Perc Marks

if(perc>=90) { printf("\nA\n");

}

else if (perc>=80 && perc<90) { printf("\nB\n");

}

else if(perc>=70 && perc<80) { printf("\nC\n");

}

else if(perc>=60 && perc<70) { printf("\nD\n"); } else if(perc>=50 && perc<60) { printf("\nE\n"); } else { printf("\nScope of Improvement\n"); } return 0; }

Result:

10) Program to print roots of quadratic equation.

C /*Program to print roots */

#include <stdio.h> #include <stdlib.h> #include <math.h>

int main() { float a, b, c, root1, root2; float realp, imagp, disc;

printf("Enter the values of a, b and c \n"); scanf("%f %f %f", &a, &b, &c);

/* If a = 0, it is not a quadratic equation */

if (a == 0 || b == 0 || c == 0) { printf("Error: Roots cannot be determined \n"); exit(1); } else { disc = b * b - 4.0 * a * c; if (disc < 0) { printf("Imaginary Roots\n"); realp = -b / (2.0 * a) ; imagp = sqrt(abs(disc)) / (2.0 * a); printf("Root1 = %f +i %f\n", realp, imagp); printf("Root2 = %f -i %f\n", realp, imagp); }

else if (disc == 0) { printf("Roots are real and equal\n"); root1 = -b / (2.0 * a); root2 = root1; printf("Root1 = %f\n", root1); printf("Root2 = %f\n", root2); }

else if (disc > 0 ) { printf("Roots are real and distinct \n"); root1 =(-b + sqrt(disc)) / (2.0 * a); root2 =(-b - sqrt(disc)) / (2.0 * a); printf("Root1 = %f \n", root1); printf("Root2 = %f \n", root2); }

} return 0; }

11) Program to check year is leap or not.

C /* To find whether year is leap or not */

#include<stdio.h> int main() {

int year,temp;

printf("Enter teh year: "); scanf("%d",&year);

temp=year%4;

if(year%100==0) { if(year%400==0) printf("\nLeap year..."); }

else { if(year%4==0) printf("\nLeap year\n");

else printf("\nNot a Leap year\n"); }

return 0; }

Result:

12) Program to print table of 5.

C /* Table of 5 */

#include<stdio.h>

int main() { int i,res;

for(i=0;i<=10;i++) { res = 5*i; printf("5 X %d = %d\n",i,res); }

return 0; }

Result:

13) To make simple calculator using switch case.

C /* C Program to Create Simple Calculator using Switch Case */

#include <stdio.h>

int main() { char Operator; float num1, num2, result = 0;

printf("\n Please Enter an Operator (+, -, *, /) : "); scanf("%c", &Operator);

printf("\n Please Enter the Values for two Operands: num1 and num2 : "); scanf("%f%f", &num1, &num2);

switch(Operator) { case '+': result = num1 + num2; break; case '-': result = num1 - num2; break; case '*': result = num1 * num2; break; case '/': result = num1 / num2; break; default: printf("\n You have enetered an Invalid Operator "); }

printf("\n The result of %.2f %c %.2f = %.2f\n", num1, Operator, num2, result);

return 0; }

Result:

14) To calculate reverse of a number.

C /* To find reverse of a Number*/

#include<stdio.h> int main() {

int num,rev=0;

printf("\nEnter the Number:"); scanf("%ld",&num);

while(num!=0) { rev = rev * 10; rev = rev + num%10; num = num/10; }

printf("\nReversed number:%d\n",rev);

printf("\n\n"); return 0; }

Result:

15) To check whether number is palindrome or not.

C /* Palindrome */

#include<stdio.h> int main() {

int n,rev=0,check,rem;

printf("\nEnter the number:"); scanf("%d",&n); check=n;

while( n!=0 ) { rem = n%10; rev = rev*10 + rem; n /= 10; }

if(rev==check) printf("\nNumber is a Pallindrome\n");

else printf("\nNumber is not a Pallindrome\n");

printf("\n\n"); return 0; }

Result:

16) To check whether a number is prime or not.

C /* Program to check prime no. */

#include <stdio.h> #include <stdlib.h>

int main() {

int num, j, flag;

printf("Enter a number \n"); scanf("%d", &num);

if (num <= 1) { printf("%d is not a prime numbers \n", num); exit(1); } flag = 0; for (j = 2; j <= num / 2; j++) { if ((num % j) == 0) { flag = 1; break; } } if (flag == 0) printf("%d is a prime number \n", num); else printf("%d is not a prime number \n", num);

return 0;

}

Result:

17) Program to print prime number to 100.

C /* Prime number from 1 to 100 */

#include<stdio.h>

int main(){

int numbr,k,remark;

printf(" The prime numbers between 1 and 100 : \n");

for(numbr=2;numbr<=100;++numbr)

{

remark=0;

for(k=2;k<=numbr/2;k++){

if((numbr % k) == 0){

remark++;

break; }

}

if(remark==0) printf("\n %d ",numbr);

}

return 0;

}

Result:

18) Program to check whether a number is armstrong or not.

C /* To check armstrong number */

#include <stdio.h> int main() { int number, originalNumber, remainder, result = 0;

printf("Enter a three digit integer: "); scanf("%d", &number);

originalNumber = number;

while (originalNumber != 0) { remainder = originalNumber%10; result += remainderremainderremainder; originalNumber /= 10;

}

if(result == number) printf("%d is an Armstrong number.\n",number); else printf("%d is not an Armstrong number\n.",number);

return 0; }

Result:

19) Print Different Patterns.

i) Pattern 1.

C #include <stdio.h> int main() {

int i,j,r;

printf("Enter number of rows: "); scanf("%d",&r);

for(i=1; i<=r; ++i) { for(j=1; j<=i; ++j) { printf("%d ",j); } printf("\n"); } return 0; }

Result:

ii) Pattern 2.

C #include <stdio.h> int main() {

int r,i,j,num= 1; printf("Enter number of rows: "); scanf("%d",&r); for(i=1;i<=r;i++) { for(j=1;j<=i;++j) { printf("%d",num); ++num; } printf("\n"); } return 0; }

####Result:

20) Program to find largest from 1 dimensional array.

C /* Largest in 1 dimensional array */

#include <stdio.h> int main() {

int i, n; float arr[100];

printf("Enter total number of elements(1 to 100): "); scanf("%d", &n); printf("\n");

// Stores number entered by the user for(i = 0; i < n; ++i) { printf("Enter Number %d: ", i+1); scanf("%f", &arr[i]); } // Loop to store largest number to arr[0] for(i = 1; i < n; ++i) { // Change < to > if you want to find the smallest element if(arr[0] < arr[i]) arr[0] = arr[i]; } printf("Largest element = %.2f", arr[0]); return 0; }

Result:

21) To find sumof the N natural numbers in an array.

C /* Sum of N no.s in array */

#include<stdio.h>

int main() { printf("\n\n\t\tStudytonight - Best place to learn\n\n\n"); int n, sum = 0, c, array[100];

printf("Enter the number of integers you want to add: "); scanf("%d", &n);

printf("\n\nEnter %d integers \n\n", n);

for(c = 0; c < n; c++) { scanf("%d", &array[c]); sum += array[c]; // same as sum = sum + array[c] }

printf("\n\nSum = %d\n\n", sum); return 0; }

Result:

22) Program to add two matrices .

C /* Addition of matrix */

#include <stdio.h> int main(){ int r, c, a[100][100], b[100][100], sum[100][100], i, j; printf("Enter number of rows (between 1 and 100): "); scanf("%d", &r); printf("Enter number of columns (between 1 and 100): "); scanf("%d", &c); printf("\nEnter elements of 1st matrix:\n"); for(i=0; i<r; ++i) for(j=0; j<c; ++j) { printf("Enter element a%d%d: ",i+1,j+1); scanf("%d",&a[i][j]); } printf("Enter elements of 2nd matrix:\n"); for(i=0; i<r; ++i) for(j=0; j<c; ++j) { printf("Enter element a%d%d: ",i+1, j+1); scanf("%d", &b[i][j]); } // Adding Two matrices for(i=0;i<r;++i) for(j=0;j<c;++j) { sum[i][j]=a[i][j]+b[i][j]; } // Displaying the result printf("\nSum of two matrices: \n"); for(i=0;i<r;++i) for(j=0;j<c;++j) { printf("%d ",sum[i][j]); if(j==c-1) { printf("\n\n"); } }

return 0;

}

Result:

23) Program to multiply two matrices .

C /* Multiplation of matrices */ #include <stdio.h> int main() { int a[10][10], b[10][10], result[10][10], r1, c1, r2, c2, i, j, k; printf("Enter rows and column for first matrix: "); scanf("%d %d", &r1, &c1); printf("Enter rows and column for second matrix: "); scanf("%d %d",&r2, &c2);

while (c1 != r2)
{
    printf("Error! column of first matrix not equal to row of second.\n\n");
    printf("Enter rows and column for first matrix: ");
    scanf("%d %d", &r1, &c1);
    printf("Enter rows and column for second matrix: ");
    scanf("%d %d",&r2, &c2);
}

printf("\nEnter elements of matrix 1:\n");
for(i=0; i<r1; ++i)
    for(j=0; j<c1; ++j)
    {
        printf("Enter elements a%d%d: ",i+1, j+1);
        scanf("%d", &a[i][j]);
    }

printf("\nEnter elements of matrix 2:\n");
for(i=0; i<r2; ++i)
    for(j=0; j<c2; ++j)
    {
        printf("Enter elements b%d%d: ",i+1, j+1);
        scanf("%d",&b[i][j]);
    }

for(i=0; i<r1; ++i)
    for(j=0; j<c2; ++j)
    {
        result[i][j] = 0;
    }

for(i=0; i<r1; ++i)
    for(j=0; j<c2; ++j)
        for(k=0; k<c1; ++k)
        {
            result[i][j]+=a[i][k]*b[k][j];
        }

printf("\nOutput Matrix:\n");
for(i=0; i<r1; ++i)
    for(j=0; j<c2; ++j)
    {
        printf("%d  ", result[i][j]);
        if(j == c2-1)
            printf("\n\n");
    }
return 0;

}

Result:

24) Program to check whether a string is palindrome or not .

C #include<stdio.h> #include <string.h>

int main() { char s[1000]; int i,n,c=0;

printf("Enter the string : "); gets(s); n=strlen(s);

for(i=0;i<n/2;i++) { if(s[i]==s[n-i-1]) c++;

}

if(c==i) printf("string is palindrome\n"); else printf("string is not palindrome\n");

return 0; }

Result:

25) Program to perform basic operations like lenghth of string ,string concat, string copy ,string compare and string reverse.

C /*Fundamental string operation, lenth, concatenation, compare and copy strings without string.h */

#include <stdio.h> #include <stdlib.h>

int find_length(char string[]) { int len = 0, i; for (i = 0; string[i] != '\0'; i++) { len++; } return len; }

void join_strings(char string1[], char string2[]) { int i, len1, len2; len1 = find_length(string1); len2 = find_length(string2); for (i = len1; i < len1 + len2; i++) { string1[i] = string2[i - len1]; } string1[i] = '\0'; //adding null character at the end of input } /returns 0 if thery are same otherwise returns 1/

int compare_strings(char string1[], char string2[]) { int len1, len2, i, count = 0; len1 = find_length(string1); len2 = find_length(string2); if (len1 != len2) return 1; for (i = 0; i < len1; i++) { if (string1[i] == string2[i]) count++; } if (count == len1) return 0; return 1; }

void copy_string(char destination[], char source[]) { int len, i; len = find_length(source); for (i = 0; i < len; i++) { destination[i] = source[i]; } destination[i] = '\0'; }

int main() { char string1[20], string2[20]; //string variables declaration with size 20 int choice; while (1) { printf("\n1. Find Length \n2. Concatenate \n3. Compare \n4. Copy \n5. Exit\n"); printf("Enter your choice: "); scanf("%d", & choice); switch (choice) { case 1: printf("Enter the string: "); scanf("%s", string1); printf("The length of string is %d", find_length(string1)); break; case 2: printf("Enter two strings: "); scanf("%s%s", string1, string2); join_strings(string1, string2); printf("The concatenated string is %s", string1); break; case 3: printf("Enter two strings: "); scanf("%s%s", string1, string2); if (compare_strings(string1, string2) == 0) { printf("They are equal"); } else { printf("They are not equal"); } break; case 4: printf("Enter a string: "); scanf("%s", string1); printf("String1 = %s\n"); printf("After copying string1 to string 2\n"); copy_string(string2, string1); printf("String2 = %s", string2); break; case 5: exit(0); } } return 0; }

Result:

26) Programs to swap two numbers using call by value and call by refernce.

C /* Call by reference */

#include <stdio.h> void swap(int*, int*);

int main() {

int x, y;

printf("Enter the value of x and y\n"); scanf("%d%d",&x,&y);

printf("Before Swapping\nx = %d\ny = %d\n", x, y);

swap(&x, &y);

printf("After Swapping\nx = %d\ny = %d\n", x, y);

return 0; }

void swap(int *a, int *b) { int temp;

temp = *b; *b = *a; *a = temp; }

Result:

call by value:-

C /* Call by value */

#include <stdio.h>

void swap(int, int);

int main() {

int x, y;

printf("Enter the value of x and y\n"); scanf("%d%d",&x,&y);

printf("Before Swapping\nx = %d\ny = %d\n", x, y);

swap(x, y);

printf("After Swapping\nx = %d\ny = %d\n", x, y);

return 0; }

void swap(int a, int b) { int temp;

temp = b; b = a; a = temp; printf("Values of a and b is %d %d\n",a,b); }

Result:

27) Program to calculate factorial of a number with and without recursion both.

C /* Recursion */

#include<stdio.h> long int multiplyNumbers(int n); int main() {

int n; printf("Enter a positive integer: "); scanf("%d", &n); printf("Factorial of %d = %ld\n", n, multiplyNumbers(n)); return 0; } long int multiplyNumbers(int n) { if (n >= 1) return n*multiplyNumbers(n-1); else return 1; }

Result:

C /* Without recrsion: */

#include <stdio.h>

int main() {

int c, n, fact = 1;

printf("Enter a number to calculate its factorial\n"); scanf("%d", &n);

for (c = 1; c <= n; c++) fact = fact * c;

printf("Factorial of %d = %d\n", n, fact);

return 0; }

Result:

28) Program to print fibonacci series with and without recursion both.

C /* Program to print fibonaci series with recursion */

#include<stdio.h> void series(int); //prototype

int main() {

int n;

printf("\n\nEnter the number of terms you wish: "); scanf("%d",&n); printf("\n\n");

series(n); // function call printf("\n\n\n");

return 0; }

void series(int n) // definition

{ int t1=0,t2=1,next;

for(int i=0;i<=n;i++) { printf("%d\n",t1);

next=t1+t2;
t1=t2;
t2=next;

} }

Result:

C // Fibonaci series without recursion:- #include <stdio.h> int fibo(int);

int main() {

int num; int result;

printf("Enter the nth number in fibonacci series: "); scanf("%d", &num); if (num < 0) { printf("Fibonacci of negative number is not possible.\n"); } else { result = fibo(num); printf("The %d number in fibonacci series is %d\n", num, result); } return 0; } int fibo(int num) { if (num == 0) { return 0; } else if (num == 1) { return 1; } else { return(fibo(num - 1) + fibo(num - 2)); } }

Result:

29) Program to calculate average of 5 numbers using function.

C /* program to find average of 5 numbers */

#include<stdio.h> int avg(int,int,int,int,int); // prototype

int main() { int a1,a2,a3,a4,a5,res;

printf("\nEnter the numbers respectiively...."); scanf("%d%d%d%d%d",&a1,&a2,&a3,&a4,&a5);

res=avg(a1,a2,a3,a4,a5); // function call printf("Average of the numbers %d",res);

return 0; }

int avg(int a1,int a2,int a3,int a4,int a5) // definition

{ int p; p=(a1+a2+a3+a4+a5)/5; return p; }

Result:

30) Program to implement linear serach and binary.

C /* Linear Search */ #include <stdio.h>

int main() { int array[100], search, c, n;

printf("Enter number of elements in array\n"); scanf("%d", &n);

printf("Enter %d integer(s)\n", n);

for (c = 0; c < n; c++) scanf("%d", &array[c]);

printf("Enter a number to search\n"); scanf("%d", &search);

for (c = 0; c < n; c++) { if (array[c] == search)
{ printf("%d is present at location %d.\n", search, c+1); break; } } if (c == n) printf("%d isn't present in the array.\n", search);

return 0; }

Result:

c /* Binary Search */

#include <stdio.h>

int main() { int c, first, last, middle, n, search, array[100];

printf("Enter number of elements\n"); scanf("%d",&n);

printf("Enter %d integers\n", n);

for (c = 0; c < n; c++) scanf("%d",&array[c]);

printf("Enter value to find\n"); scanf("%d", &search);

first = 0; last = n - 1; middle = (first+last)/2;

while (first <= last) { if (array[middle] < search) first = middle + 1;
else if (array[middle] == search) { printf("%d found at location %d.\n", search, middle+1); break; } else last = middle - 1;

  middle = (first + last)/2;

} if (first > last) printf("Not found! %d isn't present in the list.\n", search);

return 0;
}

Result:

31) Program to implement bubble sort.

C #include <stdio.h>

int main() { int array[100], n, c, d, swap;

printf("Enter number of elements\n"); scanf("%d", &n);

printf("Enter %d integers\n", n);

for (c = 0; c < n; c++) scanf("%d", &array[c]);

for (c = 0 ; c < n - 1; c++) { for (d = 0 ; d < n - c - 1; d++) { if (array[d] > array[d+1]) { swap = array[d]; array[d] = array[d+1]; array[d+1] = swap; } } }

printf("Sorted list in ascending order:\n");

for (c = 0; c < n; c++) printf("%d\n", array[c]);

return 0; }

Result:

32) Program to store information of 10 students using array of structures.

C /* Structures for student */

#include <stdio.h> struct student { char name[50]; int roll; float marks; } s[10]; int main() { int i; printf("Enter information of students:\n"); for(i=0; i<3; ++i) { s[i].roll = i+1; printf("\nFor roll number%d,\n",s[i].roll); printf("Enter name: "); scanf("%s",s[i].name); printf("Enter marks: "); scanf("%f",&s[i].marks); printf("\n"); } printf("Displaying Information:\n\n"); for(i=0; i<3; ++i) { printf("\nRoll number: %d\n",i+1); printf("Name: "); puts(s[i].name); printf("Marks: %.1f",s[i].marks); printf("\n"); } return 0; }

Result:

33) Programs to compute the transpose of a matrix.

C #include <stdio.h> int main() { int a[10][10], transpose[10][10], r, c, i, j; printf("Enter rows and columns of matrix: "); scanf("%d %d", &r, &c); // Storing elements of the matrix printf("\nEnter elements of matrix:\n"); for(i=0; i<r; ++i) for(j=0; j<c; ++j) { printf("Enter element a%d%d: ",i+1, j+1); scanf("%d", &a[i][j]); }

// Displaying the matrix a[][] */ printf("\nEntered Matrix: \n"); for(i=0; i<r; ++i) for(j=0; j<c; ++j) { printf("%d ", a[i][j]); if (j == c-1) printf("\n\n"); } // Finding the transpose of matrix a for(i=0; i<r; ++i) for(j=0; j<c; ++j) { transpose[j][i] = a[i][j]; } // Displaying the transpose of matrix a printf("\nTranspose of Matrix:\n"); for(i=0; i<c; ++i) for(j=0; j<r; ++j) { printf("%d ",transpose[i][j]); if(j==r-1) printf("\n\n"); } return 0; }

Result:

34) Program to print the address of variable using pointer.

C #include <stdio.h> int main() { int a; int *pt;

a = 10; pt = &a;

printf("\n[&a ]:Address of A = %p", &a);

return 0; }

Result:

35) Program to access array using pointer.

C #include <stdio.h> int main() { int data[5],i; printf("Enter elements: "); for(i = 0; i < 5; ++i) scanf("%d", data + i); printf("You entered: \n"); for(i = 0; i < 5; ++i) printf("%d\n", *(data + i)); return 0; }

Result:

*** ThankYou **

*