图书管理系统c++

问题描述                             

该系统要求建立设置的图书管理系统，具有对图书信息的存储、更新、查询、统计、排行、输出功能，和图书的借还及预约功能。通过此课题，熟练掌握高级程序设计语言的数据类型、程序设计语句、函数的定义和调用方法及模块化思想。

功能要求

（1）每种图书包含信息如：图书序号、图书名称、图书种类、图书总库存量、图书现库存量、作者、库存地点、借还状态等。

（2）需要实现的功能

1、该系统可用于对图书基本信息的存储、更新、查询、统计、排行、输出等操作,以实现对图书的管理。

2、其中更新功能包括：添加信息、删除信息、修改信息，可根据需要添加一个或多个图书信息,也可对个别图书信息进行适当的删除或修改，以便随时更新图书信息。

3、程序中设计的查询功能可根据需要从若干数据中查询某个图书信息，并且可根据四种不同的方法查询：按名称查询、按种类查询、按作者查询、按书名和作者查询，以满足不同的需要。

4、实时更新图书借还状态和图书库存现状。

（3）界面友好。

注：为了系统更加人性化，具有时代性，在咨询老师后，我们在以上基础上添加以下功能来丰富系统。

1、      增加读者权限，与管理员权限加以区别，管理员需要密码登录，读者需要读者号方可登录。

2、      读者可以自己注册读者账号，一个账号同时最多借10本书。

3、      读者可以自助还书，查看自己的借阅信息，以及预约书籍。

4、      读者可以查询书籍在馆情况，预约情况等。

5、      向读者推送书籍最高借阅和读者的借阅排名，读者可在自己的信息中查看。

6、      读者也可以通过管理员在借还总台还借书。

7、      管理员可以查看预约书到馆情况，以便向预约者通知。

8、      管理员可以查看借还书总次数

9、      可以对图书以借阅量以或检索号进行排序观察

注：读者可以自己编写测试文件，文件为txt格式，或者机子修改代码换为其他格式

代码：

#include <iostream>#include <cstdio>#include <cstring>#include <string>#include <vector>#include <algorithm>#include <fstream>#include <cctype>#include <iomanip>#include <conio.h>using namespace std;struct student{    int id;//读者编号    string name;//读者姓名    int borrowsum;//你已借阅多少本书,默认为0    int number;//现在还有多少本书未还，默认为0    string borrowday;//上次借阅时间，默认为0000.00.00    int b[10];//你所借书的的编号，最多10本};struct book{    int idnum;//图书检索号    int BorrowCount;//图书借阅量,初始化为0    string name;//书名    string kind;//图书种类    double price;//图书价格    int sum;//图书总库存存量    int nowsum;//图书现库存量    string author;//图书作者    int appointment;//图书预约量,初始化为0    bool ok;//是否可借,初始为可以    string borrowdate;//图书最近一次借出时间，默认为0000-00-00；    string returndate;//图书最近一次归还时间，默认为0000-00-00；    string room;//馆藏地};bool cmpByidnum(book a,book b){    return a.idnum<b.idnum;}bool cmpByCount(book a,book b){    return a.BorrowCount>b.BorrowCount;}bool cmpByBorrowsum(student a,student b){    return a.borrowsum>b.borrowsum;}bool cmpByid(student a,student b){    return a.id<b.id;}class Library{private:    int borrownum;//每月借出书数量    int returnnum;//每月还书数量    vector<book> data;    vector<student> data1;    vector<int> betoli;//预约书到馆，储存其编号public:    Library();    void AddBook(book NewBook);  //增加图书    void DeleteBook(string bookname,string author);//删除图书    void BorrowBook(string name,string author);//借阅图书    void BackBook(string name,string author,int k);//归还图书    void ShowAllBook(); //输出系统所有图书    void  SearchBookPosWithname(string thebook); //按书名查询    void  SearchBookPosWithAuthor(string theauthor);//按作者查询    void  SearchBookPosWithKind(string kind);//按种类查询    int  SearchBookPosWithAB(string theauthor,string thebook);//按作者和书名查询    int  SearchBookPosWithid(int id); //按检索号搜寻    void SortBook(int ca);  //排序    void SortStudent(int ca);//按读者借阅量排序    void Save();  //存入图书馆文件    void Save1();//存入学生文件    void Appointment(string bookname,string author);//预约图书    void printbook(book a);//输出某本书的所有信息    void revisebook(string name,string author);//修改某本书的信息    int SerchStudent(int id);//查询某个读者    //int SerchStudent1(int id);//查询某个读者    void AddStudent(student a);//增加一个读者    void PrintStudent(int kid);//输出读者信息    int GetStudent();//返回读者总数    int readsum(int id);//获取某个读者的借阅量    int getborrownum();//获取本月外借量    int getreturnnum();//获取本月还书量    void PrintToLi();//输出到馆预约书};Library::Library(){    borrownum=0;    returnnum=0;    int AllBook,AllStudent;    ifstream fin("book.txt");    if(fin)    {        fin>>AllBook;        for(int i=0; i<AllBook; i++)        {            book tem;            fin>>tem.idnum>>tem.name>>tem.author>>tem.price>>tem.kind>>tem.room>>tem.sum>>tem.nowsum>>tem.BorrowCount>>tem.ok>>tem.appointment>>tem.borrowdate>>tem.returndate;            data.push_back(tem);        }        fin.close();    }    //cin.clear();    //cin.sync();    ifstream tfin("student.txt");    if(tfin)    {        tfin>>AllStudent;        for(int i=0; i<AllStudent; i++)        {            student tem;            tfin>>tem.id>>tem.name>>tem.borrowsum>>tem.number>>tem.borrowday;            for(int j=0;j<10;j++)            {                tfin>>tem.b[j];            }            data1.push_back(tem);        }        tfin.close();    }}int Library::readsum(int a){    //SortStudent(1);    return data1[a-1].borrowsum;}int Library::getborrownum()//获取本月外借量{    return borrownum;}int Library::getreturnnum()//获取本月还书量{    return returnnum;}int Library::GetStudent(){    int k=(int)data1.size();    return k+1;}void Library::AddBook(book NewBook){    data.push_back(NewBook);}void Library::AddStudent(student newstudent){    data1.push_back(newstudent);}void Library::DeleteBook(string bookname,string author){    int pos = SearchBookPosWithAB(author,bookname);    if (pos!=-1)    {        data.erase(data.begin()+pos);        return ;    }    else        cout<<"查无此书！\n";}void Library::BorrowBook(string name,string author){    string BorrowDate;    string BackDate;    char c;    int flag=0;    SortStudent(1);    int sid=-1;    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].name==name&&data[i].author==author)        {            if(data[i].nowsum)            {                cout<<"借书读者的读者号是：";                cin>>sid;                if(data1[sid-1].number>10)                {                    cout<<"现你同时借了10本书！不可再借！"<<endl;                    break;                }                flag=1;                data[i].nowsum=data[i].nowsum-1;                data[i].BorrowCount=data[i].BorrowCount+1;                cout<<"请输入借阅日期"<<endl;                cin>>BorrowDate;                data[i].borrowdate=BorrowDate;                cout<<"请输入预计归还日期(最多可借一月)"<<endl;                cin>>BackDate;                data[i].returndate=BackDate;                data[i].ok=bool(data[i].nowsum);                borrownum++;                data1[sid-1].number++;                for(int j=0;j<10;j++)                {                    if(data1[sid-1].b[j]==0)                    data1[sid-1].b[j]=data[i].idnum;                    Save();                    Save1();                }            }            else            {                cout<<"~~~~(>_<)~~~~ !这书被借走了！是否预约？Y/N"<<endl;                cin>>c;                c=toupper(c);                if(c=='Y')                    data[i].appointment++;            }        }    }    if(!flag)        cout<<"抱歉，未找到您要找的书。"<<endl;}void Library::BackBook(string name,string author,int k)//k表示还书途径{    int c=-1;    SortStudent(1);    if(k!=-1)//读者自助还书    {        c=k-1;    }    else//读者通过借还总台还书    {        cout<<"请输入你的读者号：";        cin>>c;        c=c-1;    }    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].name==name&&data[i].author==author)        {            data[i].nowsum=data[i].nowsum+1;            data[i].ok=bool(data[i].nowsum);            returnnum++;            if(data[i].appointment!=0)            {                data[i].appointment--;                betoli.push_back(data[i].idnum);            }            for(int j=0;j<10;j++)                {                    if(data1[c].b[j]==data[i].idnum)                        data1[c].b[j]=0;                }                data1[c].number--;            break;        }    }    Save();    Save1();}void Library::printbook(book a){    cout<<setw(8)<<a.idnum;    cout<<setw(14)<<a.name;    cout<<setw(14)<<a.author;    cout<<setw(14)<<fixed<<setprecision(2)<<a.price;    cout<<setw(14)<<a.kind;    cout<<setw(14)<<a.room;    cout<<setw(14)<<a.sum;    cout<<setw(14)<<a.nowsum;    cout<<setw(14)<<a.BorrowCount;    cout<<setw(10)<<(a.ok==0?"不可借":"可借");    cout<<setw(14)<<a.appointment;    cout<<setw(14)<<a.borrowdate;    cout<<setw(14)<<a.returndate<<endl;    // cout<<endl;}void Library::PrintToLi(){    SortBook(1);    int k=(int)betoli.size();    if(!k) cout<<"     暂时无预约书到馆！"<<endl;    else    {        cout<<"        到馆的预约书有：\n";        for(int i=0;i<k;i++)        {            printbook(data[betoli[i]-1]);        }    }}void Library::PrintStudent(int kid){   int id=kid-1;    //id=SerchStudent(id);    SortStudent(1);    SortBook(1);    //SortStudent(1);    cout<<setw(8)<<data1[id].id;    cout<<setw(8)<<data1[id].name;    cout<<setw(14)<<data1[id].borrowsum;    cout<<setw(18)<<data1[id].number;    cout<<setw(14)<<data1[id].borrowday<<endl;    if(data1[id].number)    {        cout<<"你当前借了这些书：\n";        cout<<setw(16)<<"检索号"<<setw(16)<<"书名"<<setw(16)<<"作者"<<endl;        for(int i=0;i<10;i++)        {            if(data1[id].b[i]!=0)            cout<<setw(16)<<data[data1[id].b[i]-1].idnum<<setw(16)<<data[data1[id].b[i]-1].name<<setw(16)<<data[data1[id].b[i]-1].author<<endl;        }    }    else        cout<<"你当前并未借任何书,快去借本书看看吧！\n";}void Library::ShowAllBook(){    //system("cls");    cout<<setw(8)<<"检索号"<<setw(14)<<"书名"<<setw(14)<<"作者"<<setw(14)<<"价格"<<setw(14)<<"种类"<<setw(14)<<"馆藏地"<<setw(14)<<"总库存量"<<setw(14)<<"在馆量"<<setw(14)<<"借阅量"<<setw(10)<<"是否可借"<<setw(14)<<"预约量";    cout<<setw(14)<<"借出时间"<<setw(14)<<"归还时间"<<endl;    for (int i = 0; i <(int)data.size(); i++)    {        //cout<<endl;        printbook(data[i]);        //cout<<endl;        /*cout<<setw(6)<<data[i].idnum;        cout<<setw(16)<<data[i].name;        cout<<setw(8)<<data[i].author;        cout<<setw(6)<<fixed<<setprecision(2)<<data[i].price;        cout<<setw(6)<<data[i].kind;        cout<<setw(16)<<date[i].room;        cout<<setw(6)<<data[i].sum;        cout<<setw(6)<<data[i].nowsum;        cout<<setw(6)<<data[i].BorrowCount;        cout<<setw(6)<<(data[i].borrow==0?"不可借":"可借");        cout<<setw(6)<<date[i].appointment;        cout<<setw(14)<<date[i].borrowdate;        cout<<setw(14)<<date[i].returndate<<endl;*/    }}int Library::SerchStudent(int id){    int m=-1;     for (int i = 0; i <(int)data1.size(); i++)     {        if (data1[i].id==id)        {            return i;        }     }     return m; }void Library::SearchBookPosWithname(string thebook)//按书名查询{    int flag=0;    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].name==thebook)        {            printbook(data[i]);            flag=1;        }    }    if(!flag) cout<<"查无此书！\n";}void Library::SearchBookPosWithAuthor(string theauthor)//按作者查询{    bool flag=false;    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].author==theauthor)        {            flag=true;            printbook(data[i]);        }    }    if(!flag) cout<<"查无此作者的书！";}void Library::SearchBookPosWithKind(string kind)//按种类查询{    bool flag=false;    for (int i = 0; i <(int)data.size(); ++i)    {        if (data[i].kind==kind)        {            flag=true;            printbook(data[i]);        }    }    if(!flag) cout<<"查无此类书！";}int Library::SearchBookPosWithAB(string theauthor,string thebook)//按作者和书名查询{    for (int i = 0; i <(int)data.size(); ++i)    {        if (data[i].author==theauthor&&data[i].name==thebook)        {            printbook(data[i]);            return i;        }    }    cout<<"查无此书！";    return -1;}int Library::SearchBookPosWithid(int id){    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].idnum==id)        {            return i;        }    }    return -1;}void Library::SortBook(int ca)  //排序{    if (ca==0)   //按借阅量排序    {        sort(data.begin(),data.end(),cmpByCount);    }    else    //按检索号排序    {        sort(data.begin(),data.end(),cmpByidnum);    }}void Library::SortStudent(int ca){    if(ca==0)//按借阅量排序        sort(data1.begin(),data1.end(),cmpByBorrowsum);    else        sort(data1.begin(),data1.end(),cmpByid);//按读者号排序}void Library::Save() //存入书籍文件{    ofstream fout("book.txt");    if (fout)    {        fout<<data.size()<<endl;        //book p;        for (int i = 0; i <(int)data.size(); i++)        {            fout<<data[i].idnum<<" "<<data[i].name<<" "<<data[i].author<<" "<<data[i].price<<" "<<data[i].kind<<" "<<data[i].room<<" "<<data[i].sum<<" "<<data[i].nowsum<<" "<<data[i].BorrowCount<<" "<<data[i].ok<<" "<<data[i].appointment<<" "<<data[i].borrowdate<<" "<<data[i].returndate<<" "<<endl;        }        fout.close();    }}void Library::Save1() //存入学生文件{    ofstream fout("student.txt");    if (fout)    {        fout<<data1.size()<<endl;        //student p;        for (int i = 0; i <(int)data1.size(); i++)        {            fout<<data1[i].id<<" "<<data1[i].name<<" "<<data1[i].borrowsum<<" "<<data1[i].number<<" "<<data1[i].borrowday;            for(int j=0;j<10;j++)            {                fout<<" "<<data1[i].b[j];            }            fout<<endl;        }        fout.close();    }}void Library::revisebook(string name,string author)//修改图书{    string Room,Kind;    int num,k=0;    printf("你要修改的内容是：\n");    printf("                 1.馆藏地修改\n");    printf("                 2.图书总库存量修改\n");    printf("                 3.图书所属种类修改\n");    printf("                 4.退出\n");    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].author==author&&data[i].name==name)        {            k=i;            break;        }    }    int cho;    do    {        cin>>cho;        switch(cho)        {        case 1:        {            cout<<"请输入新的馆藏地：\n";            cin>>Room;            data[k].room=Room;            break;        }        case 2:        {            cout<<"请输入新的总库存量：\n";            cin>>num;            data[k].sum=num;            break;        }        case 3:        {            cout<<"请输入图书所属新种类：\n";            cin>>Kind;            data[k].kind=Kind;            break;        }        }    }    while(cho<4);}void Library::Appointment(string bookname,string author)//预约图书{    for (int i = 0; i <(int)data.size(); i++)    {        if (data[i].author==author&&data[i].name==bookname)        {            if(data[i].nowsum>0) printf("馆内有书，你无须预约！\n");            else            {                data[i].appointment++;                printf("预约成功！");            }        }    }}int main(){    cout.setf(ios::left);//左对齐    Library mybook;    char mm[6];//密码数组   // mybook.PrintStudent(0);    cout<<"                                                   欢迎使用图书管理系统"<<endl;    cout<<"请选择你的登录选项：\n";    cout<<"                  1.管理员登录"<<endl;    cout<<"                  2.读者登录"<<endl;    int cho,start,kk=1;    cin>>start;    switch(start)    {        case 1:       {        char password[]="192021";       // string passwdInput;        cout<<"请输入管理员口令:";        do{            kk=1;           for(int i=0;i<6;i++)           {            mm[i]=getch();            cout<<"*";           }           cout<<endl;           for(int i=0;i<6;i++)           {           if (mm[i]!=password[i])           {            cout<<"请输入正确密码！"<<endl;            kk=0;            break;           }           }        }while(!kk);        do        {           // cout<<"                                  欢迎使用图书管理系统"<<endl;            cin.clear();            cin.sync();            //system("cls");            cout<<"              1.所有图书目录 "<<endl;            cout<<"              2.查询图书 "<<endl;            cout<<"              3.增加图书 "<<endl;            cout<<"              4.删除图书 "<<endl;            cout<<"              5.借阅图书 "<<endl;            cout<<"              6.归还图书 "<<endl;            cout<<"              7.修改图书信息 "<<endl;            cout<<"              8.本月借还统计 "<<endl;            cout<<"              9.预约书到馆情况 "<<endl;            cout<<"              10.退出 "<<endl;            cout<<"-------------------------------------------------------------------------------------------------------------------"<<endl;            cout<<"              请选择功能,输入指令 "<<endl;            cin>>cho;            switch(cho)            {            case 1:            {                int cho2;                do                {                    mybook.ShowAllBook();                    cout<<"-------------------------------------------------------------------------------------------------------------------------------------------------------------"<<endl;                    cout<<"0:按借阅量排序 , 1:按索引号排序 ,3:退出"<<endl;                    cin>>cho2;                    switch(cho2)                    {                    case 0:                        mybook.SortBook(0);                        break;                    case 1:                        mybook.SortBook(1);                        break;                    }                }                while (cho2<2);                break;            }            case 2:            {                cout<<"              1.按书名查询 "<<endl;                cout<<"              2.按作者查询 "<<endl;                cout<<"              3.按种类查询 "<<endl;                cout<<"              4.按书名和作者查询 "<<endl;                cout<<"              5.退出 "<<endl;                cout<<"              请选择功能,输入指令 "<<endl;                int cho3;                do                {                    string Name,AutHor,Kind;                    cin>>cho3;                    switch(cho3)                    {                    case 1:                        cout<<"请输入书名！"<<endl;                        cin>>Name;                        mybook.SearchBookPosWithname(Name); //按书名查询                        break;                    case 2:                        cout<<"请输入作者！"<<endl;                        cin>>AutHor;                        mybook.SearchBookPosWithAuthor(AutHor);//按作者查询                        break;                    case 3:                        cout<<"请输入种类！"<<endl;                        cin>>Kind;                        mybook.SearchBookPosWithKind(Kind);//按种类查询                        break;                    case 4:                        cout<<"请输入作者和书名！"<<endl;                        cin>>AutHor>>Name;                        mybook.SearchBookPosWithAB(AutHor,Name);//按作者和书名查询                        break;                    }                }                while(cho3<=4&&cho3>=1);                break;            }            case 3:         //增加图书            {                book temp;                cout<<"请输入检索号:";                cin>>temp.idnum;                while (mybook.SearchBookPosWithid(temp.idnum)>-1)                {                    cout<<"检索号重复啦！~~~~(>_<)~~~~ !"<<endl;                    cin>>temp.idnum;                }                cin.clear();                cin.sync();                cout<<"书名:";                cin>>temp.name;                cout<<"作者：";                cin>>temp.author;                cout<<"价格:";                cin>>temp.price;                cout<<"种类:";                cin>>temp.kind;                cout<<"馆藏地址:";                cin>>temp.room;                cout<<"数量:";                cin>>temp.sum;                temp.nowsum=temp.sum;                temp.BorrowCount=0;                temp.ok=true;                temp.appointment=0;                temp.borrowdate="0000.00.00";                temp.returndate="0000.00.00";                mybook.AddBook(temp);                mybook.Save();                cout<<"信息保存成功"<<endl;                break;            }            case 4:         //删除图书            {                string bookname,bookauthor;                cout<<"请输入书名和作者:"<<endl;                cin>>bookname>>bookauthor;                mybook.DeleteBook(bookname,bookauthor);                break;            }            case 5:         //借书            {                string bookname,bookauthor;                cout<<"请输入要借的书名和作者："<<endl;                cin>>bookname>>bookauthor;                mybook.BorrowBook(bookname,bookauthor);                mybook.Save();                break;            }            case 6:         //还书            {                string bookname,bookauthor;                cout<<"请输入要还的书名和作者："<<endl;                cin>>bookname>>bookauthor;                mybook.BackBook(bookname,bookauthor,-1);                mybook.Save();                break;            }            case 7:            {                string name,author;                cout<<"请输入要修改的书名和作者："<<endl;                cin>>name>>author;                mybook.revisebook(name,author);                break;            }            case 8:            {                  printf("                     本月借书%d次\n",mybook.getborrownum());                  printf("                     本月还书%d次\n",mybook.getreturnnum());                  break;            }            case 9:            {                 mybook.PrintToLi();                 cout<<"-------------------------------------------------------------------------------------------------------------------"<<endl;                 break;            }            }        }        while (cho<10);        break;       // mybook.Save();    }    case 2:    {        int bh,cho,k;        cout<<"请输入你的读者编号：\n";        cin>>bh;        if(mybook.SerchStudent(bh)==-1)        {            int n;            cout<<"你不是此系统读者，是否注册？\n";            cout<<"                    1.注册\n";            cout<<"                    2.我再想想\n";            cin>>n;            student temp;            if(n==1)            {                cout<<"请输入你的姓名:";                cin>>temp.name;                cin.clear();                cin.sync();                temp.id=mybook.GetStudent();                temp.borrowsum=0;                temp.number=0;                temp.borrowday="0000.00.00";                for(int i=0;i<10;i++)                {                    temp.b[i]=0;                }                mybook.AddStudent(temp);                mybook.Save1();                //cout<<"信息保存成功"<<endl;                cout<<"                注册成功！请记住你的读者号，若忘记请联系管理员!\n";                cout<<"                姓名:"<<temp.name<<endl;                cout<<"                读者号："<<temp.id<<endl;                k=temp.id;            }            else                break;        }        else        {            k=bh;        }        do        {            //cout<<"                                  欢迎使用图书管理系统"<<endl;            cin.clear();            cin.sync();            //system("cls");            cout<<"              1.所有图书目录 "<<endl;            cout<<"              2.查询图书 "<<endl;            cout<<"              3.归还图书 "<<endl;            cout<<"              4.预约图书"<<endl;            cout<<"              5.查看我的借阅信息 "<<endl;          //  cout<<"            cout<<"              6.退出 "<<endl;            cout<<"              请选择功能,输入指令 "<<endl;            cin>>cho;            switch(cho)            {            case 1:            {                int cho2;                do                {                    mybook.ShowAllBook();                    cout<<"-------------------------------------------------------------------------------------------------------------------------------------------------------------"<<endl;                    cout<<"0:按借阅量排序 , 1:按索引号排序 ,3:退出"<<endl;                    cin>>cho2;                    switch(cho2)                    {                    case 0:                        mybook.SortBook(0);                        break;                    case 1:                        mybook.SortBook(1);                        break;                    }                }                while (cho2<2);                break;            }            case 2:            {                cout<<"              1.按书名查询 "<<endl;                cout<<"              2.按作者查询 "<<endl;                cout<<"              3.按种类查询 "<<endl;                cout<<"              4.按书名和作者查询 "<<endl;                cout<<"              5.退出 "<<endl;                cout<<"              请选择功能,输入指令 "<<endl;                int cho3;                do                {                    string Name,AutHor,Kind;                    cin>>cho3;                    switch(cho3)                    {                    case 1:                        cout<<"请输入书名！"<<endl;                        cin>>Name;                        mybook.SearchBookPosWithname(Name); //按书名查询                        break;                    case 2:                        cout<<"请输入作者！"<<endl;                        cin>>AutHor;                        mybook.SearchBookPosWithAuthor(AutHor);//按作者查询                        break;                    case 3:                        cout<<"请输入种类！"<<endl;                        cin>>Kind;                        mybook.SearchBookPosWithKind(Kind);//按种类查询                        break;                    case 4:                        cout<<"请输入作者和书名！"<<endl;                        cin>>AutHor>>Name;                        mybook.SearchBookPosWithAB(AutHor,Name);//按作者和书名查询                        break;                    }                }                while(cho3<=4&&cho3>=1);                break;            }            case 3:         //还书            {                string bookname,bookauthor;                cout<<"请输入要还的书名和作者："<<endl;                cin>>bookname>>bookauthor;                mybook.BackBook(bookname,bookauthor,k);                break;            }            case 4://预约图书            {                  string bookname,author;                  cout<<"请输入你要预约书的书名和作者:"<<endl;                  cin>>bookname>>author;                  mybook.Appointment(bookname,author);//预约图书                  break;            }            case 5://查阅个人信息            {                //mybook.SortStudent(1);                cout<<setw(8)<<"读者号"<<setw(8)<<"姓名"<<setw(14)<<"历史借阅次数"<<setw(18)<<"现在借阅书个数"<<setw(14)<<"上次还书时间"<<endl;                mybook.PrintStudent(k);                mybook.SortStudent(0);                printf("你在所有读者中借阅量排名第 %d 位\n",mybook.SerchStudent(k)+1);                printf("所有读者中的最高借阅量是：%d次\n",mybook.readsum(1));                mybook.SortStudent(1);                cout<<"-------------------------------------------------------------------------------------------------------------------"<<endl;                break;            }            }        }        while (cho<6);        break;    }   }   mybook.Save();   mybook.Save1();   return 0;}

测试文件如下：