题解 | #判断是不是字母#

#include <stdio.h>

int main() {
    char a;
    while (scanf("%c", &a) != EOF) 
    {
        getchar();
        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);
        }
    }
    return 0;
}