技術標籤：c++語法

    char szContent[] = { '\x00','\x00', '\x3f','\x00','\xf0','\x80','\x00','\x3f','\x00','\xf0','\x00','\x3f','\x00','\xf0' };
    std::string strContent;
    for (int i = 0; i < sizeof(szContent); ++i)
    {
        strContent.push_back(szContent[i]);
    }

    char szKey[] = { '\x3f','\x00','\xf0','\x00' };
    std::string strKey;
    for (int i = 0; i < sizeof(szKey); ++i)
    {
        strKey.push_back(szKey[i]);
    }

    auto pos = strContent.find(strKey); //返回7 
    cout << pos << endl;