bool IsMatch(CString s, CString p)
{
    int j = 0;//定义在外面，循环体外要用
    for (int i = 0, last_p = 0, s_start = 0; i < s.GetLength();)
    {
        if (j < p.GetLength() && (s[i] == p[j] || p[j] == ‘?‘))//
        {
            i++;
            j++;
        }
        else if (j < p.GetLength() && p[j] == ‘*‘)
        {
            s_start = i;
            last_p = ++j;
        }
        else if (last_p != 0)
        {
            i = s_start++;
            j = last_p;
        }
        else
        {
            return false;
        }
    }
    for (; j < p.GetLength() && p[j] == ‘*‘; ++j);
    return j == p.GetLength();
}