Program to check entered character is capital or small.

//Program to check entered character is capital or small.
#include<stdio.h>
#include<conio.h>
main()
{ int i;
char a;
printf("Enter a character capital or small-");
scanf("%c",&a);
i=a;
if(i>=65&&i<=90)
{printf("you entered capital letter");}
 if(i>=97&&i<=122)
printf("You entered small letter");
getch();
}