题解 | #判断是不是字母#

int main()
{
    char ch = 0;
    while((ch=getchar())!=EOF)
    {
        if(ch>='A'&&ch<='z')
        {
            printf("%c is an alphabet.\n",ch);
        }
        else
        {
            printf("%c is not an alphabet.\n",ch);
        }
        getchar();//获取缓冲区内的空格字符；
    }

    return 0;
}