定义一个Book类，包括书名、书号、出版社、定价等数据成员，为其添加构造函数、修改书名、定价的set函数、获取书号的get函数，以及显示图书信息的showBook()成员函数。

在testBook.cpp中，创建一个mian函数，在mian函数中创建两个Book类型的对象，并对各对象初始化，调用showBook()成员函数输出各对象的信息，通过相应的set函数，修改各本书的名称和价格，再输出书的相关信息。。

// Book.h代码：
#ifndef BOOK_H
#define BOOK_H
#include<iostream>
#include<string>
class Book
{
	public:
		explicit Book(std::string name, int price, int number, std::string publishing);
		void setBook(std::string name, int price);
		int getBook();
		void ShowBook();
	private:
		std::string BookName;
		double BookPrice;
		int BookNumber;
		std::string PubliShing;
};

#endif
//Book.cpp代码：
#include "Book.h"
#include<iostream>
#include<string>
using namespace std;
Book::Book(string name, int price, int number, string publishing)
	:BookName(name), BookPrice(price), BookNumber(number), PubliShing(publishing)
	{
		//BookName=name;
	}
	void Book::setBook(string name, int price)
	{
		BookName=name;
		BookPrice=price;
	}
	int Book::getBook()
	{
		return BookNumber;
	}
	void Book::ShowBook()
	{
		cout << "hello,welcome to Book!\n" << BookName <<"   " << BookPrice << "   " << BookNumber << "   "<< PubliShing << endl;
	}

//testBook.cpp代码：
#include <iostream>
#include"Book.h"
#include<string>
using namespace std;
int main()
{
	string name;
	int price;
	Book Book1("三国演义",25.2,0001,"中华出版社");
	Book Book2("红楼梦",30.4,0002,"中华出版社");
	Book1.ShowBook();
	cout << "请输入你所要修改的书的名字以及价格\n"; 
	getline(cin,name);
	cin >> price;
	Book1.setBook(name, price);
	cout << "get the name and price of the book" << Book1.getBook() << Book2.getBook() << endl;
	cout << "intformation about the book\n";
	Book1.ShowBook();
	Book2.ShowBook(); 
}