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)：#includeclass Bookprotected:char *Name;char *Publisher;public:virtual void ShowMe( )=0;Book( );virtual Book( );class Magazine: public Bookprivate:char *ID;public:void ShowMe( );friend istream &operator(istream &is,Magazine &m);Magazine( );Magazine( );class Novel:public Bookprivate:char *Author;char *PressTime;public:void ShowMe( );Novel( );Novel( );friend istream &operator(istream &is,Novel &n);class Libraryprivate:Book *book1010;public:Library( );void Add( int,int,Book * );void Delete( int ,int );void Query( int,int );Book:Book( )Name=new char20;Publisher=new char20;Book:Book( )delete Name;delete Publisher;Magazine:Magazine( ):Book( )ID=new char10;Magazine:Magazine()delete ID;Novel:Novel( )Author=new char20;PressTime=new char12;Novel:Novel( )delete Author;delete PressTime;Library:Library( )for( int i=0;i10;i+ )for( int j=0;j10;j+ )bookij=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 :IDendl(istream &is,Magazine &m)coutm.Name;coutm.ID;coutm.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: PressTimeendl(istream &is,Novel &n)coutn.Name;coutn.Author;coutn.Publisher;coutn.PressTime;return is;void Library:Add( int n,int m,Book *b)if( booknm!=NULL )cout该位置已有书,不能再添加ShowMe( );cout添加成功!endlendl;void Library:Delete( int n,int m )if( booknm=NULL )cout该位置没有书,不能删除endlendl;return;delete booknm;booknm=NULL;cout删除成功!endlendl;void Library:Query(int n,int m) if( booknm=NULL )cout该位置没有书,不能查询endlShowMe( );void main( )char ch1=1,ch2;int n,m;Magazine *mag;Novel *nov;Library lib;cout*欢迎进入图书馆管理系统*endl;while( ch1!=4)cout*请选择(1-4)*endl;cout 1-在指定书架上增加书.endl;cout 2-在指定书架上删除书.endl;cout 3-在指定书架上查询书.endl;cout 4-退出ch1;switch( ch1 )case 1:coutn;coutm;coutc-增加的是杂志.endl;coutd-增加的是小说.ch2;cout*mag;cout*nov;coutendl;lib.Add(n,m,nov);break;break;case 2:coutn;coutm;lib.Delete( n,m);break;case 3:cou