Program to check Alphabat is of upper case

#include<stdio.h>;
void main()
{
char alfa;

printf("Enter a Alphabets:");
scanf("%c",&alfa);

if( alfa >;= 65 &&amp; alfa <= 90)
    printf("Yes the alphabet is of upper case");
else
    printf("No the alphabet is of upper case");

}

OUTPUT : 1.

Enter a Alphabets:A
Yes the alphabet is of upper case

2.

Enter a Alphabets:a
No the alphabet is of upper case