C++基类的继承和多态

class Base
{
public:
    Base(){};
    ~Base(){};
public:
    virtual void printHello()
    {
        cout << "Base: Base say hello"<<endl;
    }

    void printName()
    {
        cout << "Base: I am Base" << endl;
    }

    void printDate()
    {
        cout << "Base: Base 6666" << endl;
    }
};

class Drive : public Base
{
public:
    Drive(){};
    ~Drive(){};
public:
    virtual void printHello()
    {
        cout << "Drive: Drive say hello" << endl;
    }

    void printName()
    {
        cout << "Drive: I am Drive" << endl;
    }

    void printAge()
    {
        cout << "Drive: Age 29" << endl;
    }

};



int main(int argc, char* argv[])
{
    //Test1();
    //Test2();
    //Test3();
    //Test4();
    //Test5();
    //Test6();
    //Test7();

    Base* objB1 = new Drive();
    objB1->printHello();
    objB1->printName();
    objB1->printDate();
//    objB1->printAge();  //编译器会报错 

///输出结果如下：
//  Drive: Drive say hello
//  Base : I am Base
//   Base : Base 6666


    cout << endl;
    system("pause");
    return 0;
}