题解 | #判断是不是字母#

#include <stdio.h>

int main() {
    char x;
    while(scanf("%c",&x) != EOF)
    {
        getchar();//用来除掉 \n
        if((x>=65 && x<=90)||(x>=97 && x<=122))
            printf("%c is an alphabet.\n",x);
        else
            printf("%c is not an alphabet.\n",x);
    }
    return 0;
}