How to write a C program Output using fprintf() library function in C programming (example) ?
Solution:
#include <stdio.h>
#include <stdlib.h>
int main()
{
int n, i, number;
char subject[30];
FILE *fp;
printf("How many subjects? ");
scanf("%d", &n);
getchar();
if((fp = fopen("input.txt", "w")) == NULL)
{
printf("Error opening file.\n");
exit(1);
}
for(i = 0; i < n; i++)
{
printf("Enter the name of subject %d: ", i+1);
gets(subject);
printf("Enter the marks of subject %d: ", i+1);
scanf("%d", &number);
getchar();
fprintf(fp, "%s %d\n", subject, number);
}
fclose(fp);
return 0;
}