类学习之Use Base keyword to call method in parent class from subclass

使用基础关键字从子类调用父类方法

#include <iostream>
using namespace std;
class Base {
public:
void display(void) { cout << "This is the base class" << endl; };
};

class Derived: public Base {
public:
void display(void) { cout << "This is the derived class" << endl; };
};
class PP:public Base{public: void display(void){cout<<"<pre name="code" class="cpp">This is the PP class

"<<endl}}int main(void){ Derived my_class; my_class.display(); my_class.Base::display();my_class.PP.display();}