example.c

#change 7
#123456
#7891011
#11223344
#7777
#8888
#9999
#101010
#111111
#22
#3456
#7777
#9999
#333
#555
#xxx
#999
#111111
#1234
#4444
#5555
#6666
#7777
#8888
#9999
#aaaa
#bbbb
#cccc
#dddd
#eeee
#ffff
#gggg
#hhhh123
#1234
#6666
#7777
#include <stdio.h>
int main()
{
   char name[50];
   int marks, i, num;

   printf("Enter number of students: ");
   scanf("%d", &num);

   FILE *fptr;
   fptr = (fopen("C:\\student.txt", "w"));
   if(fptr == NULL)
   {
       printf("Error!");
       exit(1);
   }

   for(i = 0; i < num; ++i)
   {
      printf("For student%d\nEnter name: ", i+1);
      scanf("%s", name);

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

      fprintf(fptr,"\nName: %s \nMarks=%d \n", name, marks);
   }

   fclose(fptr);
   return 0;
}