初學C++ 之 auto關鍵字（IDE：VS2013），autovs2013

初學C++ 之 auto關鍵字（IDE：VS2013），autovs2013

/*使用auto關鍵字，需要先賦初值，auto關鍵字是會根據初值來判斷類型*/
    auto i = 5;
    auto j = 10;
    cout << "auto i = 5" << "\ti type:" << typeid(i).name() << endl << "auto j = 10" << "\tj type:" << typeid(j).name() << endl;
    cout << "i + j = " << i + j << endl;

    auto a = "Hello World!";
    cout << "auto a = Hello World!" << endl;
    cout << "a type:" << typeid(a).name() << endl;

    auto b = false;
    cout << "auto b = false" << endl;
    cout << "b type:" << typeid(b).name() << endl;