实验五

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

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

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

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

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

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

　　

实验总结：掌握了虚构函数，希望能再多加练习