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

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

include <iostream>

include <Windows.h>

include <string>

include <fstream>

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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