实验五 类的继承、派生和多态（2）

#include<iostream>
#include<string>
using namespace std;

class MachinePets{
    public:
        MachinePets(const string s):nickname(s){}
        string getNickname() const{return nickname;}
        virtual string talk(){return 0;}
    private:
        string nickname;            
};

class PetCats:public MachinePets{
    public:
        PetCats(const string s):MachinePets(s){}
        string talk(){return "miao wu~";}
};

class PetDogs:public MachinePets{
    public:
        PetDogs(const string s):MachinePets(s){}
        string talk(){return "wang wang~";}
};

void play(MachinePets *p){
    cout<<p->getNickname()<<" says "<<p->talk()<<endl;
}

int main(){
    PetCats cat("miku");
    PetDogs dog("da huang");
    
    play(&cat);
    play(&dog);
    
    return 0;
}