GetNewCourse.c

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

void Error(char* msg) {
    perror(msg);
    exit(1);
}

int main(int argc ,char* argv[]) { 

//////////////////////// Initializing ///////////////

   char* buff;
   int place,fd,rbytes,cnt1,cnt2,i,j;
   
/////////////// open and read to buff //////////////
   
   if ((fd = open("/home/braude/Courses/Courses.txt", O_RDWR, 0644)) == -1)
     Error("failed to open file in showcourses\n");
   place=lseek(fd,0,SEEK_END);
   lseek(fd, 0, SEEK_SET);
   buff = (char*)malloc((place+1) * sizeof(char));
   if (buff == NULL) 
     Error("Failed to allocate memory.\n");
   if ((rbytes = read(fd, buff, place)) == -1)
     Error("failed to read buff in showcourses\n");
   buff[rbytes] = '\0';

///////// finding the right place to print /////////

   for(i=0,cnt1=0;i<place;i++){
     if(buff[i]=='\n')
       cnt1++;
   }     
   for(i=0,cnt2=0,j=0;i<place;i++){
     if(buff[i]=='\n')
       cnt2++;
     if((cnt1-1)==cnt2)
       break;
   }
   printf("%s",&buff[i+1]);

////////////////////// free and close  ///////////////

   close(fd);
   free(buff);
   return 1;
}