题解 | #判断是不是字母#

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