#include<iostream> using namespace std; class Father { public: Father() { cout<<"father"<<endl; } Father(int) { cout<<"int father"<<endl; } ~Father() { cout<<"~father"<<endl; } virtual void show() { cout<<"father.show"<<endl; } }; class Sun:public Father { public: Sun() { cout<<"sun"<<endl; } Sun(int) { cout<<"int sun"<<endl; } ~Sun() { cout<<"~sun"<<endl; } void show() { cout<<"sun.show"<<endl; } }; int main() { Sun s; Father f; // s.show(); // f.show(); Father *p=&s;//--------------不加virtual输出的是父类的show。 p->show(); }
多态->虚函数
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转载自blog.csdn.net/it8343/article/details/80496632
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