C Program to Read a Grade & Display the Equivalent Descriptio

This C Program reads grade & displays the equivalent description. If
 grade is S, it prints super, if grade is A, it prints very good, if 
grade is B, it prints fair, if grade is Y, it prints absent, if grade is
 F, it prints fails.

#include <stdio.h>

#include <ctype.h>

#include <string.h>

void main()

{

    char remark[15];

    char grade;

    printf("Enter the grade \n");

    scanf("%c", &grade);

    /*  lower case letter to upper case */

    grade = toupper(grade);

    switch(grade)

    {

    case 'S':

        strcpy(remark, " SUPER");

        break;

    case 'A':

        strcpy(remark, " VERY GOOD");

        break;

    case 'B':

        strcpy(remark, " FAIR");

        break;

    case 'Y':

        strcpy(remark, " ABSENT");

        break;

    case 'F':

        strcpy(remark, " FAILS");

        break;

    default :

        strcpy(remark, "ERROR IN GRADE \n");

        break;

    }

    printf("RESULT  : %s\n", remark);

}