c++实验5 Part3 简单编程练习

 1 #include"petcats.h"
 2 #include"petdogs.h"
 3 #include"machinepets.h"
 4 #include<iostream>
 5 #include<string>
 6 using namespace std;
 7 
 8 void play(MachinePets *p){
 9     cout<<p -> getNickname()<<"  says  "<<p -> talk()<<endl;
10 }
11 
12 
13 int main(){
14     PetCats cat("miku");
15     PetDogs dog("da huang");
16 
17     play(&cat);
18     play(&dog);
19     system("pause");
20     return 0;
21 }
22 
23 main

main.cpp

#include<string>
using namespace std;
#ifndef PETS_H
#define PETS_H
class MachinePets{
public:
    MachinePets(const string s):Nickname(s){}
    const string getNickname();
    virtual string talk()=0;
private:
    string Nickname;
};
#endif

machinepets.h

#include"machinepets.h"
#include<iostream>
#include<string>
using namespace std;

const string MachinePets::getNickname(){
    return Nickname;
}

machinepets.cpp

machinepets.cpp

#include<string>
usingnamespacestd;
#ifndefPETCATS_H
#definePETCATS_H
#include"machinepets.h"
classPetCats:
publicMachinePets
{public:
PetCats(conststrings):
MachinePets(s){}
stringtalk();
private:stringcatvoice;};
#endif

petcats.h

#include<iostream>
#include<string>
#include"petcats.h"
#include"machinepets.h"
using namespace std;

string PetCats::talk(){
    catvoice="miao wu~";
    return catvoice;
}

petcats.cpp

petcats.cpp

#include<string>
using namespace std;
#ifndef PETDOGS_H
#define PETDOGS_H
#include"machinepets.h"

class PetDogs : public MachinePets{
public:
    PetDogs(const string s):MachinePets(s){}
    string talk();
private:
    string dogvoice;
};
#endif

petdogs.h

petdogs.h

#include<iostream>
#include<string>
#include"petdogs.h"
#include"machinepets.h"
using namespace std;

string PetDogs::talk(){
    dogvoice="wang wang~";
    return dogvoice;
}

petdogs.cpp

petdogs.cpp