题解 | #判断是不是字母#

#include <stdio.h>

int main() {
    char ch;
    while ((ch = getchar()) != 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;
}