10 students

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

struct STUDENT {
    char NAME[10], FACULTY[10];
    int ID, MARKS;
};

int main() {
    int COUNT;
    struct STUDENT CLASS[2];

    for(COUNT = 0; COUNT < 2; COUNT++) {
        printf("\nEnter information for student %d\n", COUNT + 1);

        printf(" Name: ");
        scanf("%s", CLASS[COUNT].NAME);

        printf(" ID: ");
        scanf("%d", &CLASS[COUNT].ID);

        printf(" Faculty: ");
        scanf("%s", CLASS[COUNT].FACULTY);

        printf(" Marks: ");
        scanf("%d", &CLASS[COUNT].MARKS);

    }

    FILE * MY_FILE = fopen("student.txt","a+");

    for(COUNT = 0; COUNT < 2; COUNT++){
        fprintf(MY_FILE,"%s\t", CLASS[COUNT].NAME);

        fprintf(MY_FILE,"%d\t", CLASS[COUNT].ID);

        fprintf(MY_FILE,"%s\t", CLASS[COUNT].FACULTY);

        fprintf(MY_FILE,"%d\n", CLASS[COUNT].MARKS);
    }

    return 0;
}