Switch Programming: Switch programming in C

Write a program which will find the division from a average grade obtained by a student by using switch case in C 

#include<stdio.h>
#include<conio.h>
main()
{
    char ch;
    scanf("%c",&ch);
    switch (ch)
    {
        case 'A':
        printf("1st division");
        break;
        case 'B':
        printf("2nd division");
        break;
        case'C':
        printf("3rd division");
        break;
    }
    return 0;
}