c++ 图书管理系统代码

#include

#include

#include

struct bookData

{

 int booknumber;

 char bookname[30];

 int  store;

};

struct Person

{

 char name[20];                                //定义name数组20

 char studynumber[10];                           //定义studynumber数组10

     int count;                

  bookData Rbook[2];

  //bookData Rbook;

};

class History                                 //声明类History  

{   

public:

 History(fstream& a){readerbook=a;}

 void writehistory();

 void readhistory(fstream&);

private:

 fstream readerbook;

};

class Liberian;                               //声明类 Liberian

void Find(fstream&);

void CreateTxt(fstream&);

class Reader                                    //声明类Reader

{

 friend Liberian;

public:

  Reader(fstream&);

 void print();

 void handlebook(fstream&);

 void change();

 bool findreader();

 void Addreader();

 void deletereader();

private:

 fstream file;

 Person person;

}; 

class Liberian                                        //声明类Liberian  

{  

public:

 Liberian(char *,char *);

 void changeReader(Reader&);

 void selfprint();

 void Append(fstream&);

private:

 char workname[20];

 char worknumber[20];

};

int main()

{   

 fstream bookRecord(" book.dat",ios::in| ios::out);

 if(!bookRecord)

 {

cerr<<" Can't open,try again!"<  exit(1);

 }

 fstream readerRecord("reader.dat",ios::in|ios::out);

     if(!readerRecord)

 {

cerr<<" Can't open,try again!"<  exit(1);

 }

    int choice;  

 int key; Reader reader(readerRecord);                                   //读者管理系统

 Liberian liberian("潘飞图书管理员

 History rec(readerRecord);                                         //声明显示历史记录类

 while(1)

 {

cout<<" 请输入您的选择:\\n\\n"

<<"1--图书管理员\\n"

<<"2--读者系统\\n"

<<"0--结束程序\\n";

cin>>choice;

 switch(choice)

 {

 case 1:

  {

liberian.selfprint();cout<cout<<"1-- 增加新图书\\n"

<<"2-- 改变读者的属性\\n"

<<"3-- 显示历史记录\\n"

<<"0-- 返回\\n";

cin>>key;

  switch(key)

  {

  case 1:

   liberian.Append(bookRecord);

   break;

  case 2:

   liberian.changeReader(reader);

   break;

  case 3:

   rec.readhistory(readerRecord);

  case 0:

   break ;

  }

  }

  break;

 case 2:

  {

cout<<"学生读者\\n"; int iflag=1;

  //reader.findreader();

cout<<"1-- 借书与还书信息\\n"

<<"2-- 修改个人信息\\n"

<<"0-- 返回\\n";

cin>>key;

    switch(key)

    {

    case 1:

     reader.handlebook(bookRecord);

     break;

    case 2:

     reader.change();

     break;

    case 0:

     break;

    }

  }

  break;

 default:

 return 0;

 }

 }

 return 0;

}

                                                    //增加书籍

 void Liberian::Append(fstream& storef)

{

 bookData book;

 int choice;

 int key;

  int num;

  storef.seekp(0,ios::end);

  int posEnd=storef.tellp();

cout<<"*************书籍入库***************"<  while(1)

  {

cout<<" Please enter your choice:"<cout<<"1--添加新书\\n"<<"2--已有书籍\\n"<<"0--返回\\n";

cin>>choice;

   switch(choice)

   {

   case 1:

cout<<" 书号, 书名, 数量?"<cin>>book.booknumber>>book.bookname>>book.store;

storef.write(reinterpret_cast(&book),sizeof(bookData));

    break;

   case 2:

    storef.seekg(0,ios::beg);

cout<<"Booknumber?\\n";

cin>>key;

    do{

storef.read(reinterpret_cast(&book),sizeof(bookData));

    }while(book.booknumber!=key&&storef.tellg()!=posEnd);

    if(book.booknumber==key)

    {

cout<cout<<" 输入已有书增加的数量："<cin>>num;

if(num>0)

       book.store+=num;

     else

     {

cout<<" Invalid input"<     }

     storef.seekp(-long(sizeof(bookData)),ios::cur);

storef.write(reinterpret_cast(&book),sizeof(bookData));

cout<<"现在书籍： "<    }

    else

cout<<"找不到此书，请重新查阅书号是否正确!"<    break;

   case 0:

    return ;

   }

  }

}

            //书籍查询

  void Find(fstream & f)

   {

    bookData book;

    int key;

    int choice;

    f.seekg(0,ios::end);

    int posEnd=f.tellp();

cout<<"*************书籍查询***************"<    while(1)

    {

cout<<" 请输入您的选择\\n"

<<" 1-- 检索一本书\\n"

<<"2-- 显示全部书籍\\n"

<<"0-- 返回\\n";

cin>>choice;

    switch(choice)

    {

    case 1:

     f.seekg(0,ios::beg);

cout<<"输入你想检索书的书号"<cin>>key;

     do{

f.read(reinterpret_cast(&book),sizeof(bookData));

     }while(book.booknumber!=key&&f.tellg()!=posEnd);

     if(book.booknumber==key)

cout<     else

cout<<"找不到此书，请重新确认！"<     break;

    case 2:

     f.seekg(0,ios::beg);

     do{

f.read(reinterpret_cast(&book),sizeof(bookData));

cout<     }while(f.tellg()!=posEnd);

     break;

    case 0:

     return ;

    }

    }

   }

  Reader::Reader(fstream& c)

  {   

   file=c;

   Person person={"0

  }

  void Reader::print()

  {

cout<<"Name"<<"---"<  }

                   //操作书籍

     void Reader::handlebook(fstream &filee)

  {

   int key; int choice;

    bookData book;  bool iflag;int num=0; 

    filee.seekp(0,ios::end);

     int posEnd=filee.tellp();

     while(!(iflag=findreader()))

     {

      num++;

if(num>=3)

       return;

     }

cout<   while(1)

   {

cout<<"1-- 借书\\n"

<<"2-- 还书\\n"

<<"3-- 查找一本书\\n"

<<"0-- 返回"<<'\\n';

cin>>choice;

   switch(choice)

   {

   case 1:

    {

      filee.seekp(0,ios::end);

         int posEnd=filee.tellp();

if(person.count<=1)

     {

cout<<" 输入你要借阅图书的书号："<cin>>key;

     filee.seekg(0);

    do{

filee.read(reinterpret_cast(&book),sizeof(bookData));

    }while(book.booknumber!=key&&filee.tellp()!=posEnd);

cout<     if(book.booknumber==key)

    {

cout<<" 找到你想借阅的图书，成功借阅！"<     

if(book.store>0)

     {

     person.Rbook[person.count]=book;

       person.count+=1;

     book.store-=1;

     filee.seekp(-long(sizeof(bookData)),ios::cur);

filee.write(reinterpret_cast(&book),sizeof(bookData));

cout<<" 找到你想借阅的图书，成功借阅！"<cout<<"书籍 :"<      

     }

     else

cout<<" 现在此图书已经被借完了，请耐心等待几天!"<     

     }

    else

cout<<" 找不到你想要的图书"<     

    }

     else

cout<<"你最多只能借2本\\n\\n";

   }

    break;

   case 2:

    {   

     bookData blankbook={0,"0",0};

// if(person.count>0)

    // {

          int iflag=0; 

          filee.seekg(0);

cout<<" 输入你想要还的书的书号："<cin>>key;

for(int i=0;i<2;i++)

      { 

     if(key==person.Rbook[i].booknumber)

     {   

       person.Rbook[i]=blankbook;

cout<<"成功归还此书!";

       iflag=1;

       person.count--;

           do{

filee.read(reinterpret_cast(&book),sizeof(bookData));

     }while(book.booknumber!=key&&filee.tellp()!=posEnd);

           if(book.booknumber==key)

     {

           book.store+=1;

           filee.seekp(-long(sizeof(bookData)),ios::cur);

filee.write(reinterpret_cast(&book),sizeof(bookData));

cout<<"书籍 :"<     }

     }       

    }

      if(!iflag)

   {

cout<<" 你没有借阅那本书，请确认！"<   }

    // }

    // else

// cout<<"你没有借书,请重新确认！\\n\\n";

    }

    break;

   case 3:

    Find(filee);

    break;

       case 0:

    return;

   }

   }

  }

  void Reader::change()

{    

 char newname[20]; char newnumber[10];

 int choice;

 file.seekp(0,ios::cur);

     int Posend=file.tellp(); bool iflag;int num=0;

   while(!(iflag=findreader()))

     {

      num++;

if(num>=3)

       return;

     }

cout<<" 请输入你的选择!"<cout<<"1--改变名字!\\n"

<<"2--修改学号r\\n"

<<"0--返回\\n";

cin>>choice;

 switch(choice)

 {

 case 1:

cout<<"输入你的新名字!\\n";

cin>>newname;

  strcpy(person.name,newname);

  break;

 case 2:

cout<<"输入你的信学号?\\n";

cin>>newnumber;

  strcpy(person.studynumber,newnumber);

  break;

 default:

  break;;

 }

 file.seekp(-long(sizeof(Person)),ios::cur);

file.write(reinterpret_cast(&person),sizeof(Person));

cout<<"信息修改成功！"<  }

  void Liberian::selfprint()

  {

cout<<" 图书管理员 :\\n"

<  }

  Liberian::Liberian(char *a,char*b)

  {

   strcpy(workname,a);

   strcpy(worknumber,b);

  }

     void  Liberian::changeReader(Reader& a)

  {    

   int choice; char newname[20];char newnumber[10];

cout<<"修改读者的数据信息!\\n";

cout<<"1-- 增加一个读者\\n"

<<"2-- 删除一个读者\\n"

<<"0-- 结束程序\\n";

cin>>choice;

   switch(choice)

   {

   case 1:

    a.Addreader();

   break;

   case 2:

    a.deletereader();

    break;

   case 0:

    return;

   }

  }

  void Reader::Addreader()

  {   

   Person temp;bookData book={0,"0",0};

   file.seekp(0,ios::end);

   int Posend=file.tellp();

cout<<"输入你想要增加的读者的名字"<cin>>temp.name;

cout<<"新读者的学号:"<cin>>temp.studynumber;

         temp.Rbook[1]=book;   temp.Rbook[0]=book;   temp.count=0;

file.write(reinterpret_cast(&temp),sizeof(Person));

cout<<" 成功添加！"<  }

  void Reader::deletereader()

  {   

   file.seekp(0,ios::end);

   int Posend=file.tellp();

   Person person;

   char name[20];

cout<<"输入要删除的读者的名字!"<cin>>name;

   file.seekg(0);

   do{

file.read(reinterpret_cast(&person),sizeof(Person));

   }while(strcmp(name,person.name)&&file.tellp()!=Posend);

   if(!strcmp(name,person.name))

   {   

    bookData blankbook={0,"0",0};

    Person guest={"0

    file.seekp(-long(sizeof(Person)),ios::cur);

file.write(reinterpret_cast(&guest),sizeof(Person));

cout<<"成功删除！"<   }

   else

cout<<"查无此人!"<  }

  bool Reader::findreader()

  {

   file.seekp(0,ios::end);

   int Posend=file.tellp();

   char name[20];  

   Person guest={"0

cout<<"输入查找人的名字!";

cin>>name;

   file.seekg(0);

   do{

file.read(reinterpret_cast(&person),sizeof(Person));

   }while(strcmp(name,person.name)&&file.tellp()!=Posend);

   if(!strcmp(name,person.name))

   {

cout<<"查到此人："<   return true;

   }

   else

   {

cout<<"找不到此人，请重新确认！"<    return false;

   }

 }

  //借阅历史

  void History::readhistory(fstream& a)

  {    

    readerbook=a;

   char name[10]="0";

   readerbook.seekp(0,ios::end);

   int Posend=readerbook.tellp();

   Person guest; int iflag=1;

cout<<" 书籍借阅信息如下："<cout<<"姓名   学号    借书量     书籍名"<   readerbook.seekg(0,ios::beg);

    do{

readerbook.read(reinterpret_cast(&guest),sizeof(Person));

    if(strcmp(guest.Rbook[1].bookname,name) || strcmp(guest.Rbook[1].bookname,name))

    {

cout<for(int i=0;i<2;i++)

     if(strcmp(guest.Rbook[i].bookname,name))

cout<     iflag=0;

    }

   }while(readerbook.tellp()!=Posend);

   if(iflag)

cout<<"没有读者借阅图书！"<    

  }