#include<stdio.h>

#define COURSE_CODE_SIZE 6 + 1

void clearInput(void);

int main(void)
{

    int i, repetitions;
    int mark;
    char courseCode[COURSE_CODE_SIZE];
    FILE *fp_out;

    printf ("Enter number of records: ");
    scanf ("%d", &repetitions);
    
    fp_out = fopen("grades.dat", "a");

    for ( i = 0; i < repetitions; i++)
    {
        clearInput();
        printf ("Please enter course code: ");
        scanf ("%[^\n]", courseCode);
        printf ("Please enter mark: ");
        scanf ("%d", &mark);

        fprintf(fp_out, "%s;%d\n", courseCode, mark);

    }

    fclose(fp_out);
    return 0;

} /* End of main() program */

void clearInput(void)
{
   while ( getchar() != '\n' )
     ;

} /* End of clearInput() function */