C Program to Check Whether a Character is Alphabet or not

#include<stdio.h>
#include<conio.h>

int main()
{
	 char ch;
	 clrscr();
	 printf("Enter any character: ");
	 scanf("%c", &ch);
	
	 if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z'))
	 {
	  	printf("%c is ALPHABET.", ch);
	 }
	 else
	 {
	  	printf("%c is NOT ALPHABET.", ch);
	 }
	
	 getch();
	 return(0);
}

Output

Run 1:
----------
Enter any character: q ↲
q is ALPHABET.

Run 2:
----------
Enter any character: G ↲
G is ALPHABET.

Run 3:
----------
Enter any character: % ↲
% is NOT ALPHABET.

Run 4:
----------
Enter any character: 9 ↲
9 is NOT ALPHABET.