c++ 虛方法

標籤：

#include <iostream>#include <string>using namespace std;class Pet{public:    Pet(string theName);    void eat();    void sleep();    virtual void play();protected:    string name;};class Cat : public Pet{public :    Cat(string theName);    void climb();    void play();};class Dog : public Pet{public:    Dog(string theName);    void bark();    void play();};Pet::Pet(string theName){    name = theName;}void Pet::eat(){    cout << name <<  "[正在吃東西]" << endl;}void Pet::sleep(){    cout << name << "[正在睡大覺]" << endl;}void Pet::play(){    cout << name << "[正在玩]" << endl;}Cat::Cat(string theName) : Pet(theName){}void Cat::climb(){    cout << name << "[正在爬樹]" << endl;}void Cat::play(){    Pet::play();    cout << name << "[玩毛線球]" << endl;}Dog::Dog(string theName) : Pet(theName){}void Dog::bark(){    cout << name << "[旺 旺 旺]" << endl;}void Dog::play(){    Pet::play();    cout << name <<  "[正在追趕那隻貓]" << endl;}int main(){    int *p = new int;    *p = 100;    cout << *p << endl;    delete p;    Pet *cat = new Cat("加菲");    Pet *dog = new Dog("歐迪");    cat->sleep();    cat->eat();    cat->play();    dog->sleep();    dog->eat();    dog->play();    delete dog;    delete cat;    return 0;}

 

c++ 虛方法