isAlphabet.c

#include <stdio.h>

int main(void)
{
	char c;
	scanf("%c",&c);
	
	int isAlphabet = (c>='A' && c<='Z') || (c>='a' && c<='z');
	
	printf("%c is alphabet : %d \n",c, isAlphabet);
	return 0;
}