为马不能运行？？

Question

#ifndef _OBJECT_H
#define _OBJECT_H
#include<iostream>
#include<string>
using namespace std;class object{};class LibraryObject:public object
{
private:
int index;
string name;
public:
LibraryObject();
LibraryObject(int i,string n="无");
LibraryObject(string n);
int GetIndex();
string GetName();

void SetIndex(int );
void SetName(string);
virtual void ShowData();};
#endif 
#include<iostream>
#include<string>
#include "LibraryObject.h"
using namespace std;
LibraryObject::LibraryObject()
{index=-1,name="无";}
LibraryObject::LibraryObject(int i, string n)
{index=i;name=n;}
LibraryObject::LibraryObject(string n)
{name=n;}
int LibraryObject::GetIndex()
{return index;}
 string LibraryObject::GetName()
{return name;}
void LibraryObject::SetIndex(int i)
{index=i;}
void LibraryObject::SetName(string n)
{name=n;}
void LibraryObject::ShowData()
{cout<<index<<"  "<<name<<" "<<endl;}
 

Answer 1

#include<iostream>
#include<string>
#include"LibraryObject.h"
using namespace std;class Book :public LibraryObject
{
private:
string wname;
string pubcomname;
bool state;
string re;
bool CDROM;
/////
    static const char FileName[15];
public:
Book();
Book(int i,string Bookname,string writername,string publishcompany,bool s,bool CDROM=0,string r="");
    Book(int i,string Bookname,string writername,string publishcompany,bool s,bool CDROM=0);
//~Book();
void SetIndex(int);
void SetBookname(string);
void Setwritername(string);
void Setpublishcompany(string);
void Setstate(bool);
void SetCDROM(bool);
    void Setre(string); int GetIndex(void);
string GetBookname(void);
string Getwritername(void);
string Getpublishcompany(void);
bool Getstate(void);
bool GetCDROM(void);
    string Getre(void); void CheckOut(void);
// static const char *GetFileName(){return FileName;}
};
const char Book::FileName[15]=" Book.txt ";
//const char *Book::GetFileName();
#include<iostream>
#include<string>
#include"LibraryObject.h"
#include"Book.h"
using namespace std;
Book::Book():LibraryObject()
{
 wname="无";
     pubcomname="无";
 state=0;
     re="三无";
     CDROM=0;
}
Book::Book(int i,string Bookname,
   string writername,string publishcompany,
   bool s,bool c,string r):LibraryObject(i,Bookname)
{
 wname=writername;
     pubcomname=publishcompany;
 state=s;
     re=r;
     CDROM=c;
}
Book::Book(int i,string Bookname,string writername,
   string publishcompany,bool s,bool c):LibraryObject(i,Bookname)
{
 wname=writername;
     pubcomname=publishcompany;
 state=s;
     re="";
     CDROM=c;
}
void Book::SetIndex(int i)
{LibraryObject::SetIndex(i);}
void Book::SetBookname(string n)
{LibraryObject::SetName(n);}
void Book::Setwritername(string w)
{wname=w;}
void Book::Setpublishcompany(string pc)
{pubcomname=pc;}
void Book::Setstate(bool s)
{state=s;}
void Book::SetCDROM(bool CD)
{CDROM=CD;}
void Book::Setre(string r)
{re=r;}
int Book::GetIndex(void)
{return LibraryObject::GetIndex();}
string Book::GetBookname(void)
{return LibraryObject::GetName();}
string Book::Getwritername(void)
{return wname;}
string Book::Getpublishcompany(void)
{return pubcomname;}
bool Book::Getstate(void)
{return state;}
bool Book::GetCDROM(void)
{return CDROM;}
string Book::Getre(void)
{return re;}
void Book::CheckOut(void)
{
if (state==0)
 throw("Book is not in library!");
state=0;
}

Answer 2

我该好了！！
可是我对book类稍加改动
就提示说--------------------Configuration: Library - Win32 Debug--------------------
Compiling...
Book.cpp
Librarian.cpp
Library.cpp
d:\library\book.h(13) : error C2011: 'Book' : 'class' type redefinition
LibraryObject.cpp
Reader.cpp
Error executing cl.exe.Library.exe - 1 error(s), 0 warning(s)

Answer 3

在book.h文件开头加上下面的
#ifndef __BOOK_H__
#define __BOOK_H__结尾加上下面的
#end if   //__BOOK_H__试试