实行5

实行任务1：
Publisher.hpp:

1. #pragma once
2. #include<stdio.h>
3. class Publsher{
4.     public:
5.         Publisher(const std::string &name_="");
6.         virtual ~Publisher()=default;
7.     public:
8.         virtual void publish() const=0;
9.         virtual void use() const=0;
10.     protected:
11.         std::string name;
12. };
13. class Book:public publisher{
14.     public:
15.         Book(const std::string &name_"",const std::string &author_="");
16.     public:
17.         void publish() const override;
18.         void use() const override;
19.     private:
20.         std::string director;   
21. };
22. class Film:public publish{
23.     public:
24.         Film(const std::string &name_="",const std::string &director_="");
25.     public:
26.         void publish()const override;
27.         void use()const override;
28.     private:
29.         std::string director;
30. };
31. class Music:public Publisher{
32.     public:
33.         Music(const std::string & name_="",const std::string &director_="");
34.     public:
35.         void publish()const override;
36.         void use()const override;
37.     private:
38.         std::string artist:   
39. };

复制代码

Publisher.cpp:
[code]#include#include#include"publisher.hpp"ublisher::publisher(const std::string &name_):name{name_}{}Book::Book(const std::string &name_,const std::string &author_)ublisher{name_},author{author_}{}void Book::publish()const {    std::cout