题解 | #判断是不是字母#

int main()
{
    char a = '0';
    while ((scanf ("%c",&a)) != EOF)
    {
        if (( a <= 'z' && a >= 'a')||(a <= 'Z' && a >= 'A'))
        {
            printf ("%c is an alphabet.\n",a);
        }
        else if (a == '\n')
        {
            continue;
        }
        else 
        {
            printf ("%c is not an alphabet.\n",a);
        }
    }
    return 0;
}