C PROGRAM TO KNOW ASCII VALUE OF KEY WHICH YOU HAVE ENTERED

#include<stdio.h>
#include<conio.h>
void main()
{
    char a,b;
    do{
    printf("Enter the key which you want to know ASCII value\t");
a=getch();
    printf("\n\nthe ASCII value of key you have entered is: %d",a);
    printf("\n\nwant to know more 'y' for yes, 'n' for no(Y/N)\n\n");
    b=getch();
    }while(b=='y' || b=='Y');
getch();
}