C++元组

最新推荐文章于 2025-10-20 13:50:20 发布

原创最新推荐文章于 2025-10-20 13:50:20 发布 · 709 阅读

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#c++ #开发语言 #后端

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enum class Value
{
    SignPicture=0,
    Evaluate=1,
    IDCard=2
};
class TabletWidget {
public:
    auto GetValue(Value i);
};
auto TabletWidget::GetValue(Value i)
{
    std::string strMsg = "no Message";
    std::string returnStr = "Sorry";
    int retValue = -1;
    switch (static_cast<int>(i))
    {
    case static_cast<int>(Value::SignPicture): {
        strMsg = "no picture";
        returnStr = "Sorry";
        int retValue = static_cast<int>(Value::SignPicture);
        break;
    }
    case static_cast<int>(Value::Evaluate): {
        strMsg = "no Evaluate";
        returnStr = "Sorry";
        retValue = static_cast<int>(Value::Evaluate);
        break;
    }
    case static_cast<int>(Value::IDCard): {
        strMsg = "no IDCard";
        returnStr = "Sorry";
        retValue = static_cast<int>(Value::IDCard);
        break;
    }
    default:
        break;
    }
    return std::make_tuple(strMsg, returnStr, retValue);
}

int main()
{
     TabletWidget* tablet=new TabletWidget;
     auto fingerPicture = tablet->GetValue(Value::SignPicture);
     int retValue;
     std::string strMsg, returnStr;
     std::tie(strMsg,returnStr,retValue) = tablet->GetValue(Value::Evaluate);
     std::cout << "Message: " << strMsg << std::endl
         << "Request: " << returnStr << std::endl
         << "Return: " << retValue << std::endl;
}