作业

代码

#include <iostream>

using namespace std;

class Animal
{
private:
    string narrator;
public:
    Animal(){}
    Animal(string narrator):narrator(narrator)
    {}
    virtual void perform()
    {
        cout << "讲解员解说中" << endl;
    }

};
class Lion:public Animal
{
private:
    string animal;
public:
    Lion(){}
    Lion(string narrator,string animal):Animal(narrator),animal(animal)
    {}
    void perform()
    {
        cout << "狮子表演中" << endl;
    }
};
class Elephant:public Animal
{
 private:
    string animal1;
public:
    Elephant(){}
    Elephant(string narrator,string animal1):Animal(narrator),animal1(animal1)
    {}
    void perform()
    {
        cout << "大象表演中" << endl;
    }
};

int main()
{
    cout << "==================" << endl;
    Elephant E("耿2","大象");
    E.perform();
    Lion L("耿1","狮子");
    L.perform();
    Animal A1("耿同灏");
    A1.perform();

    cout << "==================" << endl;
    Animal *p=&L;
    p->perform();

    cout << "==================" << endl;
    Animal *q=&E;
    q->perform();
    return 0;
}