#include <stdio.h>

int main() {
	char a;

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

	if (a >= 65 && a < 65 + 26) { // >=, <= comparison operator; && logical operator
		printf("The character is of uppercase.");
	} else if (a >= 97 && a < 97 + 26) {
		printf("The character is of lowercase.");
	} else {
		printf("The character is not an alphabet.");
	}
}