题解 | #判断是不是字母#

#include <stdio.h>

int main(void) {
	char ch = 0;
	while (scanf("%c", &ch) != EOF) {
		getchar();
		if ((ch>='A' && ch<='Z') || (ch>='a' && ch <='z')) {
			printf("%c is an alphabet.\n", ch);
		}
		else {
			printf("%c is not an alphabet.\n", ch);
		}
	}
	return 0;
}