题解 | #判断是不是字母#

#include <stdio.h>

int main() {

    char a = 0;//初始化

    while (scanf(" %c", &a) != EOF)//多组输入，每一行输入一个字符
    { 
        if ((a >= 65 && a<= 90) || (a >= 97 && a<= 122))//字符为字母的ascii码
        printf("%c is an alphabet.\n", a);
        else
        printf("%c is not an alphabet.\n", a);
    }

    return 0;
}