题解 | #判断是不是字母#

#include<stdio.h>
#include<ctype.h>
int main()
{
    int ch;
    while(scanf("%c",&ch)!=EOF)
    {
        getchar();
        int ret=isalpha(ch);
        if(ret==0)
            printf("%c is not an alphabet.\n",ch);
        else
            printf("%c is an alphabet.\n",ch);
    }
    return 0;
}