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C++实现图书管理系统课程设计

发布于：2022-03-14 09:41:25  栏目：技术文档

本文实例为大家分享了C++实现图书管理系统的具体代码，供大家参考，具体内容如下

大一 C++课设，没有用分文件的形式，只是把菜单页面单独分开了。用的是链表，都是一些基础的东西。另外采用了二维数组来保存读者借书信息，并将二维数组读入文件中。

功能：1.首先是注册，登录，找回密码和修改密码功能，登录和注册使用了多态，并且登录页面采用了*符号加密。2.管理员在删除图书时，若用户此时已将此书借走，则会将此书从用户的借书书单中删去，实现了动态管理。3.容错率极高，每个页面都有返回上一页面的功能。4.每个页面都有设置有滚键盘机制，提高了容错率。

菜单：#pragma once void _mainmenu(); void Loginmenu(); void Registmenu(); void readermenu(); void mangermenu(); void changebookmenu(); void browsemenu();菜单文件`#include “menu.h”

" class="reference-link">include <cstdio>

void _mainmenu(){

  1. printf("\n\n");
  2. printf("                                        欢 迎 使 用 图 书 管 理 系 统 ！\n");
  3. printf("                              **************************************************\n");
  4. printf("                              **                    1.登录                    **\n");
  5. printf("                              **                                              **\n");
  6. printf("                              **                    2.注册                    **\n");
  7. printf("                              **                                              **\n");
  8. printf("                              **                    3.找回密码                **\n");
  9. printf("                              **                                              **\n");
  10. printf("                              **                    4.退出                    **\n");
  11. printf("                              **************************************************\n");
  12. printf("请按键选择:");

}void Loginmenu(){ printf(“ 登录页面\n”); printf(“ **\n”); printf(“ 1.管理员登录 \n”); printf(“ \n”); printf(“ 2.用户登录 \n”); printf(“ \n”); printf(“ 3.返回 \n”); printf(“ \n”); printf(“ 4.退出 \n”); printf(“ **\n”); printf(“请按键选择:”);}

void Registmenu(){ printf(“ 注册页面\n”); printf(“ **\n”); printf(“ 1.管理员注册 \n”); printf(“ \n”); printf(“ 2.用户注册 \n”); printf(“ \n”); printf(“ 3.返回 \n”); printf(“ \n”); printf(“ 4.退出 \n”); printf(“ **\n”); printf(“请按键选择:”);}

void readermenu(){ printf(“ 用户页面\n”); printf(“ **\n”); printf(“ 1.借书 \n”); printf(“ \n”); printf(“ 2.还书 \n”); printf(“ \n”); printf(“ 3.浏览图书信息 \n”); printf(“ \n”); printf(“ 4.查看已借阅书籍 \n”); printf(“ \n”); printf(“ 5.修改密码 \n”); printf(“ \n”); printf(“ 6.返回 \n”); printf(“ \n”); printf(“ 7.退出 \n”); printf(“ **\n”); printf(“请按键选择:”);}

void mangermenu(){ printf(“ 管理员页面\n”); printf(“ **\n”); printf(“ 1.增加图书 \n”); printf(“ \n”); printf(“ 2.删除图书 \n”); printf(“ \n”); printf(“ 3.修改图书信息 \n”); printf(“ \n”); printf(“ 4.查看读者信息 \n”); printf(“ \n”); printf(“ 5.浏览图书信息 \n”); printf(“ \n”); printf(“ 6.修改密码 \n”); printf(“ \n”); printf(“ 7.返回 \n”); printf(“ \n”); printf(“ 8.退出 \n”); printf(“ **\n”); printf(“请按键选择:”);}

void changebookmenu(){ printf(“\n\n”); printf(“\t\t\t\t*\n”); printf(“\t\t\t\t 1.修改id号 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 2.修改图书名称 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 3.修改图书作者 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 4.修改出版社 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 5.修改图书数量 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 6.修改是否可借 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 7.返回 \n”); printf(“\t\t\t\t*“); printf(“\n\n”);}

void browsemenu(){ printf(“\n\n\n\n”); printf(“\t\t\t\t*\n”); printf(“\t\t\t\t 1.按id号浏览 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 2.按图书数量浏览 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 3.返回 \n”); printf(“\t\t\t\t \n”); printf(“\t\t\t\t 4.退出 \n”); printf(“\t\t\t\t*\n”); printf(“请按键选择:”);}主程序#define _CRT_SECURE_NO_WARNINGS

" class="reference-link">include <iostream>

" class="reference-link">include <Windows.h>

" class="reference-link">include <string>

" class="reference-link">include <fstream>

" class="reference-link">include <conio.h>

include “menu.h”

using namespace std;class User{protected : char account[20]; char password[20]; char spassword[20];

public : virtual void Login() = 0; virtual void Regist() = 0; virtual void save() = 0; virtual void BrowseBook() = 0; virtual void ChangePassword() = 0; virtual void FindPassword() = 0;};

class Reader : public User{private: int number; string name; string sex; int books; // 借书数量 int bookcnt;// 借阅次数 char booklist[20][20];// 储存借阅书籍 class Reader* next;

public : virtual void Login(); virtual void Regist(); virtual void save(); virtual void BrowseBook(); virtual void ChangePassword(); virtual void FindPassword(); void creat(); void BrowseBorrowBook(Reader pp); void BorrowBook(Reader pp); void ReturnBook(Reader* pp);

public : void set_number(int _number) { number = _number; }; void set_name(string _name) { name = _name; }; void set_sex(string _sex) { sex = _sex; }; void set_next(Reader p) { next = p; }; void set_books(int _books) { books = _books; }; void set_bookcnt(int _bookcnt) { bookcnt = _bookcnt; }; int get_bookcnt() { return bookcnt; }; int get_number() { return number; }; int get_books() { return books; }; Reader get_next() { return next; } string get_name() { return name; }; string get_sex() { return sex; }; char get_account(Reader p) { return p->account; }; char get_password(Reader p) { return p->password; }; char get_spassword(Reader p) { return p->spassword; }; char get_booklist(Reader p, int i) { return p->booklist[i]; };

};

class Manger : public User{private: class Manger* next;

public :

  1. virtual void Login();
  2. virtual void Regist();
  3. virtual void BrowseBook();
  4. virtual void save();
  5. virtual void ChangePassword();
  6. virtual void FindPassword();
  7. void creat();
  8. void AddBook();
  9. void ChangeBook();
  10. void DeleteBook();
  11. void DeleteReaderBook(char* bookname);
  12. void BrowseReader();

public : void set_next(Manger p) { next = p; }; Manger get_next() { return next; }; char get_account(Manger p) { return p->account; }; char get_password(Manger p) { return p->password; }; char get_spassword(Manger p) { return p->spassword; };};

class Book{private: int id; int amount; int flag; string bookname; string author; string press; class Book* next;

public :

  1. void creat();
  2. void save();
  3. void show_book();
  4. void set_id(int _id) { id = _id; };
  5. void set_amount(int _amount) { amount = _amount; };
  6. void set_flag(int _flag) { flag = _flag; };
  7. void set_bookname(string _bookname) { bookname = _bookname; };
  8. void set_author(string _author) { author = _author; };
  9. void set_press(string _press) { press = _press; };
  10. void set_next(Book* p) { next = p; };
  13. int get_id() { return id; };
  14. int get_amount() { return amount; };
  15. int get_flag() { return flag; };
  16. string get_bookname() { return bookname; };
  17. string get_author() { return author; };
  18. string get_press() { return press; };
  19. Book* get_next() { return next; };

};

class DBFile{public : void cls(); void over(); void login(); void useLogin(User base); void regist(); void useRegist(User base); void usebrowsebook(User base); void usesave(User base); void usechangepassword(User base); void usefindpassword(User base); void findpassword(); int exist(char acconut, int flag); void _main(); void idsort(); void bookamountsort(); void showidsort(); void showbookamountsort(); void mangerfunction(); void readerfunction(Reader rp);};Reader rhead = NULL; Reader _rend = NULL;Manger mhead = NULL, mend = NULL;Book bhead = NULL; Book bend = NULL;char code[20] = “glysw”;

// 读者类void Reader::Login(){ int cnt = 4; int flag = 0; int k = 0; int i; char c; DBFile fp = new DBFile; Reader p = rhead->get_next(); char rpassword[2000]; char raccount[2000]; cout << “\n\n\n\n\n\n\n”; printf(“请输入您的账户(按0退出):”); while (cin >> raccount) { if (strcmp(raccount, “0”) == 0) { return; } if (strlen(raccount) <= 16) { break; } else { cout << “请输入长度为1到16位的账户:”; } }

  1. cout << "请输入您的密码(按0退出):";
  2. for (i = 0; (c = _getch()) != '\r';)
  3. {
  4.     if (c == '0')
  5.     {
  6.         return;
  7.     }
  8.     if (i <= 15 && isprint(c))
  9.     {
  10.         rpassword[i] = c;
  11.         i++;
  12.         k++;
  13.         cout << "*";
  14.     }
  15.     if (k > 0 && c > 0 && c == '\b')
  16.     {
  17.         i--;
  18.         k--;
  19.         cout << "\b";
  20.         cout << " ";
  21.         cout << "\b";
  22.     }
  23. }
  24. rpassword[i] = '\0';
  25. cout << "\n";
  26. while (p)
  27. {
  28.     if (strcmp(p->account, raccount) == 0)
  29.     {
  30.         flag = 1;
  31.         while (strcmp(p->password, rpassword) != 0)
  32.         {
  33.             cnt--;
  34.             if (cnt == 1)
  35.             {
  36.                 fp->cls();
  37.                 cout << "\n\n\n\n\n\n\n";
  38.                 cout << "密码输入次数已用完！ " << "\n" << "即将退出登录页面...";
  39.                 Sleep(3000);
  40.                 fp->cls();
  41.                 return;
  42.             }
  43.             cout << "密码错误！您还有" << cnt - 1 << "次机会\n" << endl;
  44.             cout << "请重新输入(按0退出):";
  45.             k = 0;
  46.             for (i = 0; (c = _getch()) != '\r';)
  47.             {
  48.                 if (c == '0')
  49.                 {
  50.                     return;
  51.                 }
  52.                 if (i <= 15 && isprint(c))
  53.                 {
  54.                     rpassword[i] = c;
  55.                     i++;
  56.                     k++;
  57.                     cout << "*";
  58.                 }
  59.                 if (k > 0 && c > 0 && c == '\b')
  60.                 {
  61.                     i--;
  62.                     k--;
  63.                     cout << "\b";
  64.                     cout << " ";
  65.                     cout << "\b";
  66.                 }
  67.             }
  68.             rpassword[i] = '\0';
  69.             cout << "\n";
  70.         }
  71.         cout << "读者" << raccount << "登陆成功！\n" << "即将跳转至读者页面..." << endl;
  72.         Sleep(2000);
  73.         fp->cls();
  74.         fp->readerfunction(p);
  75.         return;
  76.     }
  77.     p = p->get_next();
  78. }
  79. if (!flag)
  80. {
  81.     cout << "不存在此账号！\n请先前往注册！\n" << endl;
  82.     cout << "即将跳转至主页面...";
  83.     Sleep(2000);
  84. }

}

void Reader::Regist(){ DBFile fp = new DBFile; Reader rp = new Reader; char raccount[2000]; char rpassword[2000]; char rspassword[2000]; char name[200]; char sex[10]; int number;

  1. Reader* p = new Reader;
  2. cout << "\n\n\n\n\n\n\n";
  3. cout << "请输入账户(按0退出):";
  4. while (cin >> raccount)
  5. {
  6.     if (strcmp(raccount, "0") == 0)
  7.     {
  8.         return;
  9.     }
  10.     if (strlen(raccount) <= 16 && !fp->exist(raccount, 0))
  11.     {
  12.         break;
  13.     }
  14.     else if (fp->exist(raccount, 1))
  15.     {
  16.         cout << "该账户已存在！请重新输入(按0退出):";
  17.     }
  18.     else
  19.     {
  20.         cout << "请输入长度为1到16位的账户:";
  21.     }
  22. }
  23. strcpy_s(p->account, raccount);
  24. cout << "请输入密码(按0退出):";
  25. while (cin >> rpassword)
  26. {
  27.     if (strcmp(rpassword, "0") == 0)
  28.     {
  29.         return;
  30.     }
  31.     if (strlen(rpassword) <= 16)
  32.     {
  33.         break;
  34.     }
  35.     else
  36.     {
  37.         cout << "请输入长度为1到16位的密码(按0退出):";
  38.     }
  39. }
  40. strcpy_s(p->password, rpassword);
  41. cout << "请输入您的密保(按0退出):";
  42. while (cin >> rspassword)
  43. {
  44.     if (strcmp(rspassword, "0") == 0)
  45.     {
  46.         return;
  47.     }
  48.     if (strlen(rspassword) <= 16)
  49.     {
  50.         break;
  51.     }
  52.     else
  53.     {
  54.         cout << "请输入长度为1到16位的密保(按0退出):";
  55.     }
  56. }
  57. strcpy_s(p->spassword, rspassword);
  58. cout << "请输入您的姓名(按0退出):";
  59. cin >> name;
  60. if (strcmp(name, "0") == 0)
  61. {
  62.     return;
  63. }
  64. p->name = name;
  65. cout << "请输入您的性别(按0退出):";
  66. while (cin >> sex)
  67. {
  68.     if (strcmp(sex, "0") == 0)
  69.         {
  70.             return;
  71.         }
  72.     if (strcmp(sex, "男") == 0 || strcmp(sex, "女") == 0)
  73.     {
  74.         p->sex = sex;
  75.         break;
  76.     }
  77.     else
  78.     {
  79.         cout << "请输入男或女(按0退出):";
  80.     }
  81. }
  84. cout << "请输入您的学号(按0退出):";
  85. while (cin >> number)
  86. {
  87.     if (number == 0)
  88.     {
  89.         return;
  90.     }
  91.     if (number >= 0)
  92.     {
  93.         p->number = number;
  94.         break;
  95.     } 
  96.     else
  97.     {
  98.         cout << "请输入正确格式的学号(按0退出):";
  99.     }
  100. }
  101. _rend->set_next(p);
  102. _rend = p;
  103. _rend->set_next(NULL);
  105. rp->save();
  106. fp->cls();
  107. printf("\n\n\n\n\n\n\n");
  108. printf("\t\t\t\t\t*******************************\n");
  109. printf("\t\t\t\t\t**                           **\n");
  110. printf("\t\t\t\t\t       读者%s注册成功！！     \n", raccount);
  111. printf("\t\t\t\t\t**     即将跳转至主页面...   **\n");
  112. printf("\t\t\t\t\t**                           **\n");
  113. printf("\t\t\t\t\t*******************************\n");
  114. Sleep(1500);

}void Reader::save(){ Reader* rp = rhead->get_next(); ofstream f_reader(“reader.txt”, ios::out); while (rp) { f_reader << rp->account << “ “ << rp->password << “ “ << rp->spassword << “ “ << rp->number << “ “ << rp->name << “ “ << rp->sex << “ “ << rp->bookcnt << “ “ << rp->books; for (int i = 0; i < rp->bookcnt; i++) { f_reader << “ “ << booklist[i]; } f_reader << endl; rp = rp->get_next(); } f_reader.close();}

void Reader::BrowseBook(){ DBFile fp = new DBFile; int sign = 0; while (1) { fp->cls(); browsemenu(); char choose = _getch(); switch (choose) { case ‘1’: fp->cls(); fp->showidsort(); break; case ‘2’: fp->cls(); fp->showbookamountsort(); break; case ‘3’: fp->cls(); sign = 1; break; case ‘4’: fp->cls(); fp->over(); break; default: break; } if (sign) { break; } }}void Reader::creat(){ ifstream f_reader(“reader.txt”, ios::in); char _account[20]; char _password[20]; char _spassword[20]; int number; int bookcnt; int books; char name[20]; char sex[20]; char booklist[20][20]; while (f_reader >> _account && f_reader >> _password && f_reader >> _spassword) { Reader p = new Reader; strcpy_s(p->account, _account); strcpy_s(p->password, _password); strcpy_s(p->spassword, _password); _rend->set_next(p); p->set_next(NULL); _rend = _rend->get_next(); } while (f_reader >> number && f_reader >> name && f_reader >> sex && f_reader >> bookcnt && f_reader >> books) { Reader p = new Reader; p->number = number; p->sex = sex; p->name = name; p->bookcnt = bookcnt; p->books = books; _rend->set_next(p); p->set_next(NULL); _rend = _rend->get_next(); } while (f_reader >> bookcnt) { Reader p = new Reader; for (int i = 0; i < bookcnt; i++) { f_reader >> booklist[i]; strcpy_s(p->booklist[i], booklist[i]); } _rend->set_next(p); p->set_next(NULL); _rend = _rend->get_next(); } f_reader.close();}void Reader::BrowseBorrowBook(Reader* pp){ int cnt = pp->bookcnt; long long sign; if (cnt == 0) { printf(“\n\n\n\n\n\n\n”); printf(“\t\t\t\t\t\t您还未借阅任何书籍！\n”); } printf(“\n\n\n\n\n\n”);

  1. for (int i = 0; i < cnt; i++)
  2. {
  3.     printf("\t第%d次借阅的书籍:", i + 1);
  4.     printf("%s\t", pp->get_booklist(pp, i));
  5.     cout << "借阅数量:" << pp->get_books() << endl;
  6. }
  7. printf("\n\n请输入0退出:");
  8. while (scanf("%lld", &sign))
  9. {
  10.     if (sign == 0)
  11.     {
  12.         break;
  13.     }
  14.     else
  15.     {
  16.         printf("-------------无效的输入！请重新输入！");
  17.     }
  18. }

}

void Reader::BorrowBook(Reader pp){ Book bp = bhead->get_next(); Book* _bp = new Book; _bp->show_book(); char bookname[200]; int amount; int flag = 1; int sign = 1; int exist = 0;

  1. cout << "\n\n\n\n";
  2. cout << "请输入要借书的名称(按0退出):";
  3. cin >> bookname;
  4. if (strcmp(bookname, "0") == 0)
  5. {
  6.     return;
  7. }
  8. while (bp)
  9. {
  10.     if (bp->get_bookname() == bookname)
  11.     {
  12.         if (bp->get_amount() == 0)
  13.         {
  14.             cout << "此书无余量！\n";
  15.             sign = 0;
  16.         }
  17.         if (bp->get_flag() == 0)
  18.         {
  19.             cout << "此书不可借！\n";
  20.             flag = 0;
  21.         }
  22.         if (sign == 1 && flag == 1)
  23.         {
  24.             cout << "请输入要借阅书籍的数量:";
  25.             while (cin >> amount)
  26.             {
  27.                 if (bp->get_amount() < amount)
  28.                 {
  29.                     cout << "借阅数量超过此书已有库存！请重新输入:";
  30.                 }
  31.                 else
  32.                 {
  33.                     int a = pp->get_books() + amount;
  34.                     pp->set_books(a);
  35.                     int b = bp->get_amount() - amount;
  36.                     bp->set_amount(b);
  37.                     break;
  38.                 }
  39.             }
  40.             pp->bookcnt++;
  41.             strcpy_s(pp->booklist[pp->bookcnt - 1], bookname);
  42.             pp->save();
  43.             bp->save();
  44.             exist = 1;
  45.             break;
  46.         }
  47.     }
  48.     bp = bp->get_next();
  49. }
  50. if (exist == 0 && sign == 1 && flag == 1)
  51. {
  52.     cout << "不存在此书！！\n";
  53. }
  54. else if (exist == 1)
  55. {
  56.     cout << "图书:" << bookname << "借阅成功！！\n";
  57. }
  58. cout << "页面即将跳转...";
  59. Sleep(1200);

}void Reader::ReturnBook(Reader pp){ Book bp = bhead->get_next(); char bookname[200]; int amount; int exist = 0; int flag = 0; int cnt = pp->bookcnt; if (cnt == 0) { printf(“\n\n\n\n\n\n\n”); printf(“\t\t\t\t\t\t您还未借阅任何书籍！\n”); system(“pause”); return; } printf(“\n\n\n\n\n\n”); for (int i = 0; i < cnt; i++) { cout << “——————-第” << i + 1 << “次借阅的书籍:” << pp->booklist[i] << “\t\t”; cout << “借阅数量:” << pp->books << endl; } cout << “请输入您要退还的书籍(按0退出):”; while (cin >> bookname) { if (strcmp(bookname, “0”) == 0) { return ; } for (int i = 0; i < pp->bookcnt; i++) { if (strcmp(pp->booklist[i], bookname) == 0) { flag = i; exist = 1; break; } } if (!exist) { cout << “未查询到该书!\n”; cout << “请重新输入(按0退出):”; } else { break; } } while (bp) { if (bp->get_bookname() == bookname) { cout << “请输入您要退还书籍的数量:”; while (cin >> amount) { if (pp->books < amount) { cout << “您未持有此数量的书籍!\n”; cout << “请重新输入:”; } else { int a = pp->books - amount; int b = bp->get_amount() + amount; pp->set_books(a); bp->set_amount(b); break; } } } bp = bp->get_next(); } if (pp->books == 0) { for (int i = flag; i < pp->books - 1; i++) { strcpy_s(pp->booklist[i], pp->booklist[i + 1]); } pp->bookcnt—; } pp->save(); bp->save(); cout << bookname << “退还成功！！\n”; cout << “即将返回上一页面…”; Sleep(1100);}void Reader::FindPassword(){ Reader rp = rhead->get_next(); char password[200]; char account[200]; char spassword[200]; int flag = 0; int sign = 0; cout << “请输入您的账户(按0退出):”; while (cin >> account) { if (strcmp(account, “0”) == 0) { return; } while (rp) { if (strcmp(rp->get_account(rp), account) == 0) { flag = 1; break; } rp = rp->get_next(); } if (flag) { break; } else { printf(“此账号不存在！请重新输入(按0退出):”); rp = rhead->get_next(); } } if (flag) { rp = rhead->next; printf(“请输入您设置的密保(按0退出):”); while (cin >> spassword) { if (strcmp(spassword, “0”) == 0) { return; } while (rp) { if (strcmp(rp->get_spassword(rp), spassword) == 0) { sign = 1; break; } rp = rp->get_next(); } if (sign) { printf(“密保输入正确！\n”); printf(“您的密码为%s\n”, rp->get_password(rp)); system(“pause”); return; } else { printf(“——————-密保输入错误！请重新输入(按0退出):”); rp = rhead->get_next(); } } }}void Reader::ChangePassword(){ DBFile fp = new DBFile; Reader p = rhead->get_next(), rp = new Reader; int flag = 0; int sign = 0; char raccount[200]; char rpassword[200]; char rspassword[200]; cout << “请输入您的账户(按0退出):”; while (cin >> raccount) { if (strcmp(raccount, “0”) == 0) { return; } while (p) { if (strcmp(p->account, raccount) == 0) { flag = 1; break; } p = p->get_next(); } if (flag) { break; } else { cout << “此账号不存在！请重新输入(按0退出):”; p = rhead->get_next(); } } if (flag) { p = rhead->get_next(); cout << “请输入您设置的密保(按0退出):”; while (cin >> rspassword) { if (strcmp(rspassword, “0”) == 0) { return; } while (p) { if (strcmp(p->spassword, rspassword) == 0) { sign = 1; break; } p = p->get_next(); } if (sign) { cout << “请输入修改后的密码(按0退出):”; while (cin >> rpassword) { if (strcmp(rpassword, “0”) == 0) { return; } if (strlen(rpassword) <= 16) { break; } else { cout << “请输入长度为1到16位的密码(按0退出):”; } } strcpy_s(p->password, rpassword); cout << “密码修改成功！”; fp->usesave(p); system(“pause”); return; } else { cout << “密保输入错误！！请重新输入(按0退出):”; p = rhead->get_next(); } } }}

// 数据操作类void DBFile::cls(){ system(“cls”);}void DBFile::over(){ DBFile* dbp = new DBFile; dbp->cls(); system(“color 6”); int time = 6; printf(“\n\n\n\n\n\n\n\n\n”); printf(“\t\t\t\t\t\t感谢您的使用！！\n\n\n\n\n”); printf(“ 程序即将关闭…”); while (—time >= 1) { printf(“\r%d”, time); printf(“\b”); Sleep(1000); } dbp->cls(); exit(0);}

void DBFile::login(){ Reader rp = new Reader; Manger mp = new Manger; int sign = 0; while (1) { cls(); Loginmenu(); char choose = _getch(); switch (choose) { case ‘1’: cls(); useLogin(mp); break; case ‘2’: cls(); useLogin(rp); break; case ‘3’: cls(); sign = 1; break; case ‘4’: cls(); over(); break; default: cout << “输入无效！！”; break; } if (sign) { break; } }}void DBFile::useLogin(User base){ base->Login();}void DBFile::regist(){ Reader rp = new Reader; Manger mp = new Manger; int sign = 0; while (1) { cls(); Registmenu(); char choose = _getch(); switch (choose) { case ‘1’: cls(); useRegist(mp); break; case ‘2’: cls(); useRegist(rp); break; case ‘3’: cls(); sign = 1; break; case ‘4’: cls(); over(); break; default: cout << “无效输入！！”; break; } if (sign) { break; } }}void DBFile::usesave(User base){ base->save();}void DBFile::usechangepassword(User* base){ base->ChangePassword();}

void DBFile::useRegist(User* base){ base->Regist();}

void DBFile::usebrowsebook(User* base){ base->BrowseBook();}

void DBFile::usefindpassword(User base){ base->FindPassword();}void DBFile::findpassword(){ printf(“\n\n\n\n\n\n”); printf(“\t\t\t\t\t**\n”); printf(“\t\t\t\t\t \n”); printf(“\t\t\t\t\t 1.管理员找回密码 \n”); printf(“\t\t\t\t\t \n”); printf(“\t\t\t\t\t 2.用户找回密码 \n”); printf(“\t\t\t\t\t \n”); printf(“\t\t\t\t\t 3.返回 \n”); printf(“\t\t\t\t\t \n”); printf(“\t\t\t\t\t**\n”); printf(“请按键选择:”); int choose; int sign = 0; Reader rp = new Reader; Manger* mp = new Manger; scanf(“%d”, &choose); while (1) { cls();

  1.     switch (choose)
  2.     {
  3.     case 1:
  4.         cls();
  5.         usefindpassword(mp);
  6.         sign = 1;
  7.         break;
  8.     case 2:
  9.         cls();
  10.         usefindpassword(mp);
  11.         sign = 1;
  12.         break;
  13.     case 3:
  14.         sign = 1;
  15.         break;
  16.     default:
  17.         printf("输入无效！");
  18.         break;
  19.     }
  20.     if (sign)
  21.     {
  22.         break;
  23.     }
  24. }

}int DBFile::exist(char account, int flag){ if (flag == 0) { Reader p = rhead->get_next(); while (p != NULL) { if (strcmp(account, p->get_account(p)) == 0) { return 1; } p = p->get_next(); } } else if (flag == 1) { Manger* p = mhead->get_next(); while (p != NULL) { if (strcmp(account, p->get_account(p) ) == 0) { return 1; } p = p->get_next(); } } return 0;}void DBFile::_main(){ while (1) { cls(); _mainmenu(); char choose = _getch(); switch (choose) { case ‘1’: cls(); login(); break; case ‘2’: cls(); regist(); break; case ‘3’: cls(); findpassword(); break; case ‘4’: cls(); over(); break; default: cout << “无效输入！！”; break; } }}

void DBFile::idsort(){ Book f, x, y, p; f = NULL; if (bhead->get_next() == NULL || bhead->get_next()->get_next() == NULL) { return; } while (f != bhead->get_next()->get_next()) { for (p = bhead; p->get_next()->get_next() != f; p = p->get_next()) { if (p->get_next()->get_id() > p->get_next()->get_next()->get_id()) { x = p->get_next(); y = p->get_next()->get_next(); p->set_next(y); x->set_next(y->get_next()); y->set_next(x); } } f = p->get_next(); }}void DBFile::bookamountsort(){ Book f, x, y, p; f = NULL; if (bhead->get_next() == NULL || bhead->get_next()->get_next() == NULL) { return; } while (f != bhead->get_next()->get_next()) { for (p = bhead; p->get_next()->get_next() != f; p = p->get_next()) { if (p->get_next()->get_amount() > p->get_next()->get_next()->get_amount()) { x = p->get_next(); y = p->get_next()->get_next(); p->set_next(y); x->set_next(y->get_next()); y->set_next(x); } } f = p->get_next(); }}void DBFile::showidsort(){ DBFile fp = new DBFile; Book bp = new Book; fp->idsort(); bp->show_book(); system(“pause”);}void DBFile::showbookamountsort(){ DBFile fp = new DBFile; Book bp = new Book; fp->bookamountsort(); bp->show_book(); system(“pause”);}void DBFile::mangerfunction(){ DBFile fp = new DBFile; Manger mp = new Manger; int sign = 0; int choose; while (1) { fp->cls(); mangermenu(); cin >> choose; switch (choose) { case 1: fp->cls(); mp->AddBook(); break; case 2: fp->cls(); mp->DeleteBook(); break; case 3: fp->cls(); mp->ChangeBook(); break; case 4: fp->cls(); mp->BrowseReader(); break; case 5: fp->cls(); mp->BrowseBook(); break; case 6: fp->cls(); fp->usechangepassword(mp); break; case 7: fp->cls(); sign = 1; break; case 8: fp->cls(); fp->over(); break; default: cout << “输入无效！！”; break; } if (sign) { break; } }}void DBFile::readerfunction(Reader pp){ DBFile fp = new DBFile; Reader rp = new Reader; int sign = 0; while (1) { fp->cls(); readermenu(); char choose = _getch(); switch (choose) { case ‘1’: fp->cls(); rp->BorrowBook(pp); break; case ‘2’: fp->cls(); rp->ReturnBook(pp); break; case ‘3’: fp->cls(); fp->usebrowsebook(rp); break; case ‘4’: fp->cls(); rp->BrowseBorrowBook(pp); break; case ‘5’: fp->cls(); fp->usechangepassword(rp); break; case ‘6’: fp->cls(); sign = 1; break; case ‘7’: fp->over(); break; default: cout << “输入无效！！”; break; } if (sign) { break; } }}// 管理员类void Manger::Login(){ int cnt = 4; int flag = 0; int k = 0; int i; char c; DBFile fp = new DBFile; Manger* p = mhead->get_next(); char mpassword[2000]; char maccount[2000]; cout << “\n\n\n\n\n\n\n”; printf(“请输入您的账户(按0退出):”); while (cin >> maccount) { if (strcmp(maccount, “0”) == 0) { return; } if (strlen(maccount) <= 16) { break; } else { cout << “请输入长度为1到16位的账户:”; } }

  1. cout << "请输入您的密码(按0退出):";
  2. for (i = 0; (c = _getch()) != '\r';)
  3. {
  4.     if (c == '0')
  5.     {
  6.         return;
  7.     }
  8.     if (i <= 15 && isprint(c))
  9.     {
  10.         mpassword[i] = c;
  11.         i++;
  12.         k++;
  13.         printf("*");
  14.     }
  15.     if (k > 0 && c > 0 && c == '\b')
  16.     {
  17.         i--;
  18.         k--;
  19.         printf("\b");
  20.         printf(" ");
  21.         printf("\b");
  22.     }
  23. }
  24. mpassword[i] = '\0';
  25. printf("\n");
  26. while (p)
  27. {
  28.     if (strcmp(p->account, maccount) == 0)
  29.     {
  30.         flag = 1;
  31.         while (strcmp(p->password, mpassword) != 0)
  32.         {
  33.             cnt--;
  34.             if (cnt == 1)
  35.             {
  36.                 fp->cls();
  37.                 cout << "\n\n\n\n\n\n\n";
  38.                 cout << "密码输入次数已用完！ " << "\n" << "即将退出登录页面...";
  39.                 Sleep(3000);
  40.                 fp->cls();
  41.                 return;
  42.             }
  43.             cout << "密码错误！您还有"<< cnt - 1 << "次机会\n"<< endl;
  44.             cout << "请重新输入(按0退出):";
  45.             k = 0;
  46.             for (i = 0; (c = _getch()) != '\r';)
  47.             {
  48.                 if (c == '0')
  49.                 {
  50.                     return;
  51.                 }
  52.                 if (i <= 15 && isprint(c))
  53.                 {
  54.                     mpassword[i] = c;
  55.                     i++;
  56.                     k++;
  57.                     printf("*");
  58.                 }
  59.                 if (k > 0 && c > 0 && c == '\b')
  60.                 {
  61.                     i--;
  62.                     k--;
  63.                     printf("\b");
  64.                     printf(" ");
  65.                     printf("\b");
  66.                 }
  67.             }
  68.             mpassword[i] = '\0';
  69.             printf("\n");
  70.         }
  71.         cout << "管理员"<< maccount << "登陆成功！\n" << "即将跳转至管理员页面..." << endl;
  72.             Sleep(2000);
  73.         fp->cls();
  74.         fp->mangerfunction();
  75.         return;
  76.     }
  77.     p = p->get_next();
  78. }
  79. if (!flag)
  80. {
  81.     cout << "不存在此账号！\n请先前往注册！\n" << endl;
  82.     cout << "即将跳转至主页面...";
  83.     Sleep(2000);
  84. }

}void Manger::Regist(){ DBFile fp = new DBFile; Manger mp = new Manger; char maccount[2000]; char mpassword[2000]; char mspassword[2000]; char mangercode[2000]; cout << “\n\n\n\n\n\n\n”; cout << “请输入管理员验证码:”; cin >> mangercode; int cnt = 2; while (—cnt >= 0) { if (strcmp(mangercode, code) == 0) { cout << “管理员验证成功！！\n” << “即将跳转至注册页面…”; Sleep(1000); fp->cls(); break; } else { cout << “管理员验证失败！！\n” << “您还有” << cnt + 1 << “次机会\n”; cout << “请重新输入:”; cin >> mangercode; } if (cnt == 0) { cout << “输入次数已用完\n” << “即将退出管理员注册系统…”; Sleep(1000); fp->cls(); return; } } Manger* p = new Manger; cout << “\n\n\n\n\n\n\n”; cout << “请输入账户(按0退出):”; while (cin >> maccount) { if (strcmp(maccount, “0”) == 0) { return; } if (strlen(maccount) <= 16 && !fp->exist(maccount, 1)) { break; } else if (fp->exist(maccount, 1)) { cout << “该账户已存在！请重新输入(按0退出):”; } else { cout << “请输入长度为1到16位的账户:”; } } strcpy_s(p->account, maccount); cout << “请输入密码(按0退出):”; while (cin >> mpassword) { if (strcmp(mpassword, “0”) == 0) { return; } if (strlen(mpassword) <= 16) { break; } else { cout << “请输入长度为1到16位的密码(按0退出):”; } } strcpy_s(p->password, mpassword); cout << “请输入您的密保(按0退出):”; while (cin >> mspassword) { if (strcmp(mspassword, “0”) == 0) { return; } if (strlen(mspassword) <= 16) { break; } else { cout << “请输入长度为1到16位的密保(按0退出):”; } } strcpy_s(p->spassword, mspassword); mend->set_next(p); mend = p; mend->set_next(NULL);

  1. mp->save();
  2. fp->cls();
  3. printf("\n\n\n\n\n\n\n");
  4. printf("\t\t\t\t\t*******************************\n");
  5. printf("\t\t\t\t\t**                           **\n");
  6. printf("\t\t\t\t\t       管理员%s注册成功！！     \n", maccount);
  7. printf("\t\t\t\t\t**     即将跳转至主页面...   **\n");
  8. printf("\t\t\t\t\t**                           **\n");
  9. printf("\t\t\t\t\t*******************************\n");
  10. Sleep(1500);

}void Manger::BrowseBook(){ DBFile fp = new DBFile; int sign = 0; while (1) { fp->cls(); browsemenu(); char choose = _getch(); switch (choose) { case ‘1’: fp->cls(); fp->showidsort(); break; case ‘2’: fp->cls(); fp->showbookamountsort(); break; case ‘3’: fp->cls(); sign = 1; break; case ‘4’: fp->cls(); fp->over(); break; default: break; } if (sign) { break; } }}void Manger::save(){ Manger mp = mhead->get_next(); ofstream f_manger(“manger.txt”, ios::out); while (mp) { f_manger << mp->account << “ “ << mp->password << “ “ << mp->spassword << endl; mp = mp->get_next(); } f_manger.close();}void Manger::creat(){ char account[20]; char password[20]; char spassword[20];

  1. ifstream f_manger("manger.txt", ios::in);
  2. while (f_manger >> account && f_manger >> password && f_manger >> spassword)
  3. {
  5.     Manger* p = new Manger;
  6.     strcpy_s(p->account, account);
  7.     strcpy_s(p->password, password);
  8.     strcpy_s(p->spassword, password);
  9.     mend->set_next(p);
  10.     p->set_next(NULL);
  11.     mend = mend->get_next();
  12. }
  13. f_manger.close();

}void Manger::AddBook(){ DBFile fp = new DBFile; Book p = bhead->get_next(); int a; int id = 0; int amount; char bookname[2000]; do { fp->cls(); cout << “\n\n\n\n\n”; cout << “请输入要添加书名id(按0退出):”; while (cin >> id) { if (id == 0) { return; } if (id < 0) { cout << “请输入正确格式的id号(按0退出):”; } else { break; } } int flag = 0; while (p) { if (p->get_id() == id) { flag = 1; break; } p = p->get_next(); } if (flag) { cout << “已查出此书，请输入再次增加图书的数量:”; while (cin >> amount) { if (amount <= 199 && amount > 0) { int temp = p->get_amount() + amount; p->set_amount(temp); cout << “图书” << p->get_bookname() << “添加成功！”;

  1.                 break;
  2.             }
  3.             else
  4.             {
  5.                 cout << "请输入数量为0-199以内的图书:";
  6.             }
  7.         }
  8.     }
  9.     else
  10.     {
  11.         p = new Book;
  12.         p->set_id(id);
  13.         cout << "请输入增加图书的数量:";
  14.         while (cin >> amount)
  15.         {
  16.             if (amount <= 199 && amount > 0)
  17.             {
  18.                 p->set_amount(amount);
  19.                 break;
  20.             }
  21.             else
  22.             {
  23.                 cout << "请输入数量为0-199范围以内的图书:";
  24.             }
  25.         }
  27.         cout << "请输入是否可借:";
  28.         int sign = 0;
  29.         while (cin >> sign)
  30.         {
  31.             if (sign == 1 || sign == 0)
  32.             {
  33.                 p->set_flag(sign);
  34.                 break;
  35.             }
  36.             else if (sign < 0 || sign > 1)
  37.             {
  38.                 cout << "请输入正确格式的可借标志(1为可借，0为不可借):";
  39.             }
  40.         }
  41.         char bookname[200];
  42.         cout << "请输入书名:";
  43.         cin >> bookname;
  44.         p->set_bookname(bookname);
  46.         char author[200];
  47.         cout << "请输作者:";
  48.         cin >> author;
  49.         p->set_author(author);
  51.         char press[200];
  52.         cout << "请输入出版社:";
  53.         cin >> press;
  54.         p->set_press(press);
  56.         bend->set_next(p);
  57.         bend = p;
  58.         bend->set_next(NULL);
  59.     }
  60.     p->save();
  61.     fp->cls();
  62.     printf("\n\n\n\n\n\n");
  63.     printf("\t\t\t\t\t********************************\n");
  64.     printf("\t\t\t\t\t**                            **\n");
  65.     printf("\t\t\t\t\t      图书%d添加成功!       \n", bend->get_id());
  66.     printf("\t\t\t\t\t**                            **\n");
  67.     printf("\t\t\t\t\t********************************\n");
  68.     Sleep(1000);
  69.     fp->cls();
  70.     cout << "\n\n\n\n\n";
  71.     cout << "是否继续添加？\n" << "继续请按1，返回请按0:";
  72.     cin >> a;
  73. } while (a == 1);
  74. printf("页面即将跳转...");
  75. Sleep(1000);

}void Manger::ChangeBook(){ DBFile fp = new DBFile; Book p = bhead->get_next(); int id; int amount; int flag = 0; char bookname[200]; char author[200]; char press[200]; int exist = 0; int sign = 0;

  1. Book* bp = bhead->get_next();
  2. bp->show_book();
  4. cout << "请输入要修改书名的id号(按0退出):";
  5. while (cin >> id)
  6. {
  7.     if (id == 0)
  8.     {
  9.         return;
  10.     }
  11.     while (p)
  12.     {
  13.         if (p->get_id() == id)
  14.         {
  15.             exist = 1;
  16.             break;
  17.         }
  18.         p = p->get_next();
  19.     }
  20.     if (!exist)
  21.     {
  22.         p = bhead->get_next();
  23.         cout << "为查询到该id号！请重新输入(按0退出):";
  24.     }
  25.     else
  26.     {
  27.         break;
  28.     }
  29. }
  30. if (!exist)
  31. {
  32.     return;
  33. }
  34. else
  35. {
  36.     int sign = 0;
  37.     int choose;
  38.     fp->cls();
  39.     changebookmenu();
  40.     while (1)
  41.     {
  42.         cout << "请输入您要进行的操作:";
  43.         cin >> choose;
  44.         switch (choose)
  45.         {
  46.         case 1:
  47.             cout << "请输入修改后的id号:";
  48.             cin >> id;
  49.             p->set_id(id);
  50.             cout << "修改成功！！\n";
  51.             break;
  52.         case 2:
  53.             cout << "请输入要修改后的图书名称:";
  54.             cin >> bookname;
  55.             p->set_bookname(bookname);
  56.             cout << "修改成功！！\n";
  57.             break;
  58.         case 3:
  59.             cout << "请输入要修改后的作者:";
  60.             cin >> author;
  61.             p->set_author(author);
  62.             cout << "修改成功！！\n";
  63.             break;
  64.         case 4:
  65.             cout << "请输入修改后的出版社:";
  66.             cin >> press;
  67.             p->set_press(press);
  68.             cout << "修改成功！！\n";
  69.             break;
  70.         case 5 :
  71.             cout << "请输入修改后的图书数量:";
  72.             while (cin >> amount)
  73.             {
  74.                 if (amount <= 199 && amount > 0)
  75.                 {
  76.                     p->set_amount(amount);
  77.                     break;
  78.                 }
  79.                 else
  80.                 {
  81.                     cout << "请输入0-199以内的图书数量:";
  82.                 }
  83.             }
  84.             cout << "修改成功！！\n";
  85.             break;
  86.         case 6 :
  87.             if (p->get_flag() == 1)
  88.             {
  89.                 cout << "是否将此书修改为不可借？(1确认，2返回):";
  91.                 while (cin >> flag)
  92.                 {
  93.                     if (flag == 2)
  94.                     {
  95.                         break;
  96.                     }
  97.                     if (flag == 1)
  98.                     {
  99.                         p->set_flag(1);
  100.                         p->save();
  101.                         cout << "修改成功！！\n";
  102.                         break;
  103.                     }
  104.                     else
  105.                     {
  106.                         cout << "请输入正确格式的借书标志!(1确认，2返回):";
  107.                     }
  108.                 }
  110.             }
  111.             else if (p->get_flag() == 0)
  112.             {
  113.                 cout << "是否将此书修改为可借？(1确认，2返回):";
  114.                 while (cin >> flag)
  115.                 {
  116.                     if (flag == 2)
  117.                     {
  118.                         break;
  119.                     }
  120.                     if (flag == 1)
  121.                     {
  122.                         p->set_flag(0);
  123.                         p->save();
  124.                         cout << "修改成功！！\n";
  125.                         break;
  126.                     }
  127.                     else
  128.                     {
  129.                         cout << "请输入正确格式的借书标志!(1确认，2返回):";
  130.                     }
  131.                 }
  132.             }
  133.             break;
  134.         case 7:
  135.             sign = 1;
  136.             break;
  137.         default :
  138.             cout << "输入无效！！";
  139.             cin.clear();
  140.             break;
  141.         }
  142.         if (sign)
  143.         {
  144.             break;
  145.         }
  146.     }
  147. }

}void Manger::DeleteBook(){ Book bp = bhead->get_next(); char bookname[20]; int flag = 0; bp->show_book(); cout << “请输入您要删除图书的名称(按0退出):”; while (cin >> bookname) { if (strcmp(bookname, “0”) == 0) { return; } while (bp) { if (bp->get_bookname() == bookname) { flag = 1; break; } bp = bp->get_next(); } if (flag == 0) { cout << “未查询到此书!\n” << “请重新输入(按0退出):”; bp = bhead->get_next(); } else { break; } } DeleteReaderBook(bookname); bp = bhead->get_next(); Book pp = bhead; while (bp) {// bp->next 可能是链表的最后一个 if (bp->get_bookname() == bookname) { if (bp->get_next() == NULL) { bhead->set_next(NULL); } else { pp->set_next(bp->get_next()); } } pp = pp->get_next(); bp = bp->get_next(); }

  1. cout << "\n\n\n\n\n\n";
  2. cout << "图书" << bookname << "删除成功!!\n";
  3. cout << "页面即将跳转..";
  4. Sleep(1500);
  5. Book* p = new Book;
  6. p->save();

}void Manger::DeleteReaderBook(char bookname){ Reader rp = rhead->get_next(); Reader* pp = new Reader; int flag = 0;

  1. while (rp)
  2. {
  3.     flag = 1;
  4.     for (int i = 0; i < rp->get_bookcnt(); i++)
  5.     {
  6.         if (strcmp(rp->get_booklist(rp, i), bookname) == 0)
  7.         {
  8.             flag = i;
  9.             break;
  10.         }
  11.     }
  12.     if (flag != 1)
  13.     {
  14.         for (int j = flag; j < rp->get_bookcnt() - 1; j++)
  15.         {
  16.             strcpy(rp->get_booklist(rp, j), rp->get_booklist(rp, j + 1));
  17.         }
  18.         int temp = rp->get_bookcnt();
  19.         temp--;
  20.         rp->set_bookcnt(temp);
  21.     }
  22.     rp = rp->get_next();
  23. }
  24. pp->save();

}void Manger::BrowseReader(){

  1. cout << "账户\t\t" << "密码\t\t" << "密保\t\t" << "性别\t\t" << "姓名\t\t"
  2.     << "学号\t\t" << "借书次数\n";
  3. Reader* rp = rhead->get_next();
  4. while (rp)
  5. {
  7.     cout << rp->get_account(rp) << "\t\t" << rp->get_password(rp) << "\t\t" << rp->get_spassword(rp) << "\t\t" 
  8.         << rp->get_sex() << "\t\t" << rp->get_name() << "\t\t" << rp->get_number() << "\t\t" << rp->get_bookcnt() << endl;
  9.     rp = rp->get_next();
  10. }
  11. system("pause");

}void Manger::FindPassword(){ Manger mp = mhead->get_next(); char password[200]; char account[200]; char spassword[200]; int flag = 0; int sign = 0; cout << “请输入您的账户(按0退出):”; while (cin >> account) { if (strcmp(account, “0”) == 0) { return; } while (mp) { if (strcmp(mp->get_account(mp), account) == 0) { flag = 1; break; } mp = mp->get_next(); } if (flag) { break; } else { printf(“此账号不存在！请重新输入(按0退出):”); mp = mhead->get_next(); } } if (flag) { mp = mhead->get_next(); printf(“请输入您设置的密保(按0退出):”); while (cin >> spassword) { if (strcmp(spassword, “0”) == 0) { return; } while (mp) { if (strcmp(mp->get_spassword(mp), spassword) == 0) { sign = 1; break; } mp = mp->get_next(); } if (sign) { printf(“密保输入正确！\n”); printf(“您的密码为%s\n”, mp->get_password(mp)); system(“pause”); return; } else { printf(“——————-密保输入错误！请重新输入(按0退出):”); mp = mhead->get_next(); } } }}void Manger::ChangePassword(){ DBFile fp = new DBFile; Manger p = mhead->get_next(), mp = new Manger; int flag = 0; int sign = 0; char maccount[200]; char mpassword[200]; char mspassword[200]; cout << “请输入您的账户(按0退出):”; while (cin >> maccount) { if (strcmp(maccount, “0”) == 0) { return; } while (p) { if (strcmp(p->account, maccount) == 0) { flag = 1; break; } p = p->get_next(); } if (flag) { break; } else { cout << “此账号不存在！请重新输入(按0退出):”; p = mhead->get_next(); } } if (flag) { p = mhead->get_next(); cout << “请输入您设置的密保(按0退出):”; while (cin >> mspassword) { if (strcmp(mspassword, “0”) == 0) { return; } while (p) { if (strcmp(p->spassword, mspassword) == 0) { sign = 1; break; } p = p->get_next(); } if (sign) { cout << “请输入修改后的密码(按0退出):”; while (cin >> mpassword) { if (strcmp(mpassword, “0”) == 0) { return; } if (strlen(mpassword) <= 16) { break; } else { cout << “请输入长度为1到16位的密码(按0退出):”; } } strcpy_s(p->password, mpassword); cout << “密码修改成功！”; fp->usesave(p); system(“pause”); return; } else { cout << “密保输入错误！！请重新输入(按0退出):”; p = mhead->get_next(); } } }}

// 图书类void Book::creat()

{ ifstream f_book(“book.txt”, ios::in); int id; int amount; int flag; string bookname; string author; string press; while (f_book >> id && f_book >> flag && f_book >> amount && f_book >> bookname && f_book >> author && f_book >> press) { Book* p = new Book; p->id = id; p->flag = flag; p->amount = amount; p->bookname = bookname; p->author = author; p->press = press;

  1.     bend->set_next(p);
  2.     p->set_next(NULL);
  3.     bend = bend->get_next();
  4. }
  5. f_book.close();

}

void Book::save(){ Book* bp = bhead->get_next(); ofstream f_book(“book.txt”, ios::out); while (bp) { f_book << bp->id << “ “ << bp->flag << “ “ << bp->amount << “ “ << bp->bookname << “ “ << bp->author << “ “ << bp->press << endl; bp = bp->get_next(); } f_book.close();}

void Book::show_book(){ Book* bp = bhead->get_next(); cout << “id号\t\t” << “是否可借\t\t” << “数量\t\t” << “书名\t\t” << “作者\t\t” << “出版社\n”; while (bp) { cout << bp->get_id() << “\t\t” << bp->get_flag() << “\t\t\t” << bp->get_amount() << “\t\t” << bp->get_bookname() << “\t\t” << bp->get_author() << “\t\t” << bp->get_press() << “\n”; bp = bp->get_next(); }}int main(){ mhead = new Manger; mend = new Manger; mhead->set_next(NULL); mend = mhead;

  1. rhead = new Reader; _rend = new Reader; rhead->set_next(NULL); _rend = rhead;
  3. bhead = new Book; bend = new Book; bhead->set_next(NULL); bend = bhead;
  5. Reader* rp = new Reader; rp->creat();
  6. Manger* mp = new Manger; mp->creat();
  7. Book* bp = new Book; bp->creat();
  8. DBFile* dbp = new DBFile;
  9. system("color B");
  10. dbp->_main();
  11. delete dbp;
  12. return 0;

}`

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