Reply to thread

Message

[QUOTE="pete, post: 1676015"]
/* BEGIN grade.c */

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

#define STRINGLENGTH    3
#define str(x)          # x
#define xstr(x)         str(x)

int main(void) 
{
    char string[STRINGLENGTH + 1] = {'\0'};
    int rc;

fputs("Enter the Numeric grade: ", stdout);
    fflush(stdout);
    rc = scanf("%" xstr(STRINGLENGTH) "[^\n]%*[^\n]", string);
    getchar();
    while (rc > 0) {
        char letter[] = {'D','C','B','A'};
        int number;

number = atoi(string);
        if (number > 60) {
            if (number > 99) {
                number = 99;
            }
            string[0] = letter[(number - 60) / 10];
            switch (number % 10) {
            case 0:
            case 1:
            case 2:
            case 3: 
                string[1] = '-';
                string[2] = '\0';
                break;
            case 7:
            case 8:
            case 9: 
                string[1] = '+';
                string[2] = '\0';
                break;
            default:
                string[1] = '\0';
                break;
            }
        } else {
            string[0] = 'F';
            string[1] = '\0';
        }
        printf("The Letter grade is: %s\n", string);
        fputs("Enter the Numeric grade: ", stdout);
        fflush(stdout);
        rc = scanf("%" xstr(STRINGLENGTH) "[^\n]%*[^\n]", string);
        getchar();
    }
    return 0;
}

/* END grade.c */
[/QUOTE]

Verification