北大自考C++上机图书管理系统.doc

北大自考C++上机图书管理系统(可运行)： #includeiostream.h class Book{ protected: char *Name; char *Publisher; public: virtual void ShowMe( )=0; Book( ); virtual ~Book( ); }; class Magazine: public Book { private: char *ID; public: void ShowMe( ); friend istream operator(istream is,Magazine m); Magazine( ); ~Magazine( ); }; class Novel:public Book { private: char *Author; char *PressTime; public: void ShowMe( ); Novel( ); ~Novel( ); friend istream operator(istream is,Novel n); }; class Library { private: Book *book[10][10]; public: Library( ); void Add( int,int,Book * ); void Delete( int ,int ); void Query( int,int ); }; Book::Book( ) { Name=new char[20]; Publisher=new char[20]; } Book::~Book( ) { delete Name; delete Publisher; } Magazine::Magazine( ):Book( ) { ID=new char[10]; } Magazine::~Magazine() { delete ID; } Novel::Novel( ) { Author=new char[20]; PressTime=new char[12]; } Novel::~Novel( ) { delete Author; delete PressTime; } Library::Library( ) { for( int i=0;i10;i++ ) for( int j=0;j10;j++ ) book[i][j]=NULL; } void Magazine::ShowMe( ) { cout该杂志的名称是 :Nameendl; cout该杂志的出版社是 :Publisherendl; cout该杂志的期刊号是 :IDendlendl; } istream operator(istream is,Magazine m) { cout请输入杂志的名称: ; cinm.Name; cout请输入杂志的期刊号: ; cinm.ID; cout请输入杂志的出版社: ; cinm.Publisher; return is; } void Novel::ShowMe( ) { cout该小说的名称是: Nameendl; cout该小说的出版社是: Publisherendl; cout该小说的作者是:Authorendl; cout该小说的出版日期是: PressTimeendlendl; } istream operator(istream is,Novel n) { cout请输入小说的名称: ; cinn.Name; cout请输入小说的作者: ; cinn.Author; cout请输入小说的出版社: ; cinn.Publisher; cout请输入小说的出版日期: ; cinn.PressTime; return is; } void Library::Add( int n,int m,Book *b) { if( book[n][m]!=NULL ) { cout该位置已有书,不能再添加endl; return; } book[n][m]=b; book[n][m]-ShowMe( ); cout添加成功!endlendl; } void Library::Delete( int n,int m ) { if( book[n][m]==NULL ) { cout该位置没有书,不能删除endlendl; return; } delete book[n][m]; book[n][m]=NULL; cout删除成功!endlendl; } void