图书馆管理系统代码

#include

#define DEBUG 0

//宏定义决定测试代码是否编译0为不编译非0则编译

const char book_path[20] = "books.txt";

const char reader_path[20] = "readers.txt";

//文件读写声明

void read_from_files_to_vector();

void write_all_to_files();

#if DEBUG

void scan_readers() {

for(reader &s:readers) {

wcout << s;

}

}

#endif

int main()

{

//完成操作后需要在控制台按5中退出才会保存到文件

wcin.imbue(china);

wcout.imbue(china);

read_from_files_to_vector();

#if DEBUG

cout <<"size of readers = "<< readers.size() << endl;

cout <<"size of books = "<< books.size() << endl;

scan_book();

scan_readers();

#endif

string password = "123456"; //密码已改

cout <<"------------欢迎使用中南大学网络在线图书系统------------"<

//这里可以添加你们小组的名单或一些装饰的字符

cout <<"--------------------请选择登录方式--------------------"<< endl;

cout <<" 1 管理员登陆2读者登陆"<< endl;

int a;

cin >> a;

cleanScreen();

if (a == 1)

{

string str;

for (int j = 0; j <= 4; j++)

{

cout <<"请输入管理密码,你有"<< (4-j) <<"次机会"<< endl;

cin >> str;

if (password == str)

{

break;

}

else cout <<"密码错误！请重新输入"<< endl;

if (j == 4)

return 0;

}

cleanScreen();

cout <<"-------------欢迎来到图书管理系统-------------"<< endl;

cout <<"成功登陆!你有以下操作可供选择"<< endl;

cout << endl;

//操作循环

cout <<" 1 浏览图书信息"<< endl;

cout <<" 2 图书信息修改"<< endl;

cout <<" 3 图书信息添加"<< endl;

cout <<" 4 图书信息删除"<< endl;

cout <<" 5 保存信息并退出系统"<< endl;

cout <<"--------------请选择操作选项编号--------------"<< endl;

int b;

cin >> b;

cleanScreen();

while (b != 5) {

switch (b)

{

case 1:scan_book(); break;

case 2:modify_book(); break;

case 3:add_book(); break;

case 4:delete_book(); break;

default:cout <<"输入错误，请重新输入"; break;

}

cout << endl;

cout <<"---------------请进行下一次操作---------------"<< endl;

cout <<" 1 浏览图书信息"<< endl;

cout <<" 2 图书信息修改"<< endl;

cout <<" 3 图书信息添加"<< endl;

cout <<" 4 图书信息删除"<< endl;

cout <<" 5 退出系统"<< endl;

cout <<"--------------请选择操作选项编号--------------"<< endl;

cin >> b;

cleanScreen();

}

write_all_to_files();

return 0;

}

else if (a == 2)

{

int readerIndex = 0; //记录读者下标

//输入学号登陆

cout <<"--------------请输入学号--------------"<< endl;

wchar_t studentnumber[20];

for (int m = 0; m <= 9; m++)

{

cout <<"请输入学号,你有"<< (9-m) <<"次机会"<< endl;

wcin >> studentnumber;

int t;

for (t = 0; t < readers.size(); t++)

{

if (wcscmp(studentnumber, readers[t].cardnum) == 0)

{

readerIndex = t;

break;

}

}

//判断跳出循环原因

if (t < readers.size())

break;

else

{

cout <<"登录账号不存在，请重新输入学号"<< endl;

continue;

}

if (m == 9)

return 0;

}

cleanScreen();

cout <<"------------欢迎来到读者自助系统------------"<< endl;

wcout << L"欢迎你,"<< readers[readerIndex].name << L"!你有以下操作可供选择"<< endl;

cout << endl;

//操作循环

cout <<" 1 图书浏览"<< endl;

cout <<" 2 图书查询"<< endl;

cout <<" 3 图书借阅"<< endl;

cout <<" 4 图书返还"<< endl;

cout <<" 5 退出系统"<< endl;

cout <<"---------------请选择操作选项--------------"<< endl;

int c;

cin >> c;

cleanScreen();

while (c != 5)

{

switch (c)

{

case 1:scan_book(); break;

case 2:search_book(); break;

case 3:borrow_book(readerIndex); break;

case 4:return_book(readerIndex); break;

default:cout <<"输入错误!请重新输入"<< endl; break;

}

cout << endl;

cout <<"--------------请进行下一次操作--------------"<< endl;

cout <<" 1 图书浏览"<< endl;

cout <<" 2 图书查询"<< endl;

cout <<" 3 图书借阅"<< endl;

cout <<" 4 图书返还"<< endl;

cout <<" 5 退出系统"<< endl;

cout <<"---------------请选择操作选项---------------"<< endl;

cin >> c;

cleanScreen();

}

write_all_to_files();

return 0;

}

return 0;

}

//main 函数结束

//写入/读取文件

void write_all_to_files()

{

wofstream outfile;

outfile.imbue(locale("chs"));

//写入书本文件

outfile.open(book_path);

outfile << books.size() << '\n';

for (int i = 0; i < books.size(); i++)

{

outfile << books[i];

}

outfile.close();

outfile.clear();

//写入读者文件,由于程序中没有针对读者的删改(备用,将0改为1后即可编译这段代码) #if 0

outfile.open(path::reader_path);

outfile << readers.size() << '\n';

for (int i = 0; i < readers.size(); i++)

{

outfile << readers[i];

}

outfile.close();

#endif

return;

}

void read_from_files_to_vector()

{

wifstream infile;

infile.imbue(locale("chs"));

//用于设置读写中文

book bb;

reader rr;

//在程序目录下没有相应文件时创建空文件(备用,将0改为1后即可编译这段代码) #if 0

wofstream creat_if_no;

creat_if_no.imbue(locale("chs"));

creat_if_no.open(book_path,ios::_Noreplace);

creat_if_no.close();

creat_if_no.clear();

creat_if_no.open(reader_path, ios::_Noreplace);

creat_if_no.close();

creat_if_no.clear();

#endif

//读取书本数据

infile.open(book_path);

int size = 0;

infile >> size;

while (!infile.eof() && size != 0)

{

infile >> bb;

books.push_back(bb);

size--;

}

infile.close();

infile.clear();

//读取读者数据

infile.open(reader_path);

infile >> size;

while (!infile.eof() && size != 0)

{

infile >> rr;

readers.push_back(rr);

size--;

}

infile.close();

return;

}

#include "classes.h"

locale china("chs");//use china character

/*void printout_book(book &b)

{

cout << b.id << '\n'

<< b.title << '\n'

<< b.firstauthor << '\n'

<< b.publisher <<'\n'

<< b.birthday << '\n'

<< b.location << '\n'

<< b.price << '\n'

<< b.number << endl;

}*/

//这个函数我用重载运算符<< 的函数代替了

//对应全局变量的定义

vector books;

vector readers;

//book重载操作符函数定义

wistream& operator >> (wistream& in, book &b) {

cout <<"请输入书号"<< endl;

in >> b.id;

cout <<"请输入书名"<< endl;

in >> b.title;

cout <<"请输入作者名"<< endl;

in >> b.firstauthor;

cout <<"请输入出版社"<< endl;

in >> b.publisher;

cout <<"请输入印刷日期（年月）"<< endl;

in >> b.birthday;

cout <<"请输入所属类别"<< endl;

in >> b.location;

cout <<"请输入价格"<< endl;

in >> b.price;

cout <<"请输入数量"<< endl;

in >> b.number;

return in;

}

wostream& operator<<(wostream& out, book &b)

{

out << b.id << ' '

<< b.title << ' '

<< b.firstauthor << ' '

<< b.publisher << ' '

<< b.birthday.year << ' '

<< b.birthday.month << ' '

<< b.location << ' '

<< b.price << ' '

<< b.number << endl;

return out;

}

wifstream& operator >> (wifstream& in, book &b)

{

in >> b.id >> b.title >> b.firstauthor

>> b.publisher >> b.birthday.year >> b.birthday.month

>> b.location >> b.price >> b.number;

return in;

}

wofstream& operator<<(wofstream& out, book &b)

{

out << b.id << ' '

<< b.title << ' '

<< b.firstauthor << ' '

<< b.publisher << ' '

<< b.birthday << ' '

<< b.location << ' '

<< b.price << ' '

<< b.number << '\n';

return out;

}

//reader重载操作符函数定义

wistream& operator >> (wistream& in, reader &r)

{

//由于没有对reader的操作，这个函数尚未被使用

cout <<"请输入读者姓名"<< endl;

in >> https://www.360docs.net/doc/3a16507962.html,;

cout <<"请输入性别（男为０，女为１）"<< endl;

cout <<"请输入卡号"<< endl;

in >> r.cardnum;

cout <<"请输入学位（学士为０，硕士为１，博士为２）"<< endl;

in >> r.e;

r.already = 0; //已借书本数默认为0

return in;

}

wostream& operator<<(wostream& out, reader &r)

{

out << r.cardnum << ' ';

out << https://www.360docs.net/doc/3a16507962.html, << ' ';

out << r.s << ' ';

out << r.e << ' ';

out << r.already << endl;

return out;

}

wifstream& operator >> (wifstream& in, reader &r)

{

in >> r.cardnum >> https://www.360docs.net/doc/3a16507962.html, >> r.s

>> r.e >> r.already;

return in;

}

wofstream& operator<<(wofstream& out, reader &r)

{

out << r.cardnum << ' '

<< https://www.360docs.net/doc/3a16507962.html, << ' '

<< r.s << ' '

<< r.e << ' '

<< r.already << '\n';

return out;

}

//main函数中调用定义

void scan_book() //建立浏览函数

{

for (int i = 0; i < books.size(); i++)

{

wcout << books[i];

}

}

void search_book() //建立搜索函数

{

cout <<"************你有以下查询方式可供选择************"<< endl; cout <<" 1 按书名查询"<< endl;

cout <<" 2 按编号查询"<< endl;

cout <<" 3 按作者查询"<< endl;

cout <<"************请选择查询方式************"<< endl;

cin >> g;

switch (g)

{

case 1:

{

wchar_t name[20];

cout <<"************请输入书名************"<< endl;

wcin >> name;

for (int r = 0; r < books.size(); r++)

{

if (wcscmp(books[r].title, name) == 0)

{

wcout << books[r];

return;

}

}

cout <<"查无此书"<< endl;

return;

break;

}

case 2:

{

int str;

cout <<"************请输入图书编号************"<< endl;

cin >> str;

for (int l = 0; l < books.size(); l++)

{

if (books[l].id == str)

{

wcout << books[l];

return;

}

}

cout <<"查无此书"<< endl;

return;

break;

}

case 3:

wchar_t auth[10];

cout <<"************请输入图书作者************"<< endl;

wcin >> auth;

for (int p = 0; p < books.size(); p++)

{

if (wcscmp(books[p].firstauthor, auth) == 0)

{

wcout << books[p];

return;

}

}

cout <<"查无此书"<< endl;

return;

break;

}

default:

{

cout <<"查无此书"<< endl;

return;

}

}

}

//!!!实现逻辑有问题，无法建立书-借书人的对应关系

void borrow_book(int t) //建立借书函数

{

if (readers[t].already >= 5)

{

cout <<"抱歉，你的借书数已满，不可再借"<< endl;

return;

}

int log;

cout <<"************请输入要借出图书的登陆号************"<< endl;

wcin >> log;

for (int i = 0; i < books.size(); ++i)

{

if (log == books[i].id)

{

if (books[i].number > 0)

{

int y;

cout <<"确认借出书籍吗？确认请输入1 取消请输入0"<< endl;

cin >> y;

if (y == 1)

{

cout <<"借阅成功！";

--(books[i].number);

++(readers[t].already);

return;

}

else return;

}

else

{

cout <<"图书已借完"<< endl;

return;

}

}

}

cout <<"图书不存在！"<< endl;

return;

}

void return_book(int t) //建立还书函数

{

int log;

cout <<"************请输入要归还的图书的登陆号************"<< endl;

wcin >> log;

for (int i = 0; i < books.size(); i++)

{

if (log == books[i].id)

{

cout <<"图书归还成功"<< endl;

++books[i].number;

--readers[t].already;

return;

}

}

cout <<"图书不存在于本图书馆无需归还！"<< endl;

return;

}

void modify_book() //建立修改函数

{

int log;

cout <<"************请输入要修改的图书编号************"<< endl;

wcin >> log;

for (int i = 0; i < books.size(); i++)

{

if (log == books[i].id)

{

cout <<"需修改图书信息如下"<< endl;

wcout << books[i];

cout <<"************请输入修改后的信息************"<< endl;

wcin >> books[i];

return;

}

}

cout <<"图书不存在无法修改"<< endl;

return;

}

void delete_book()

{

int log;

cout <<"************请输入要删除的图书编号************"<< endl;

cin >> log;

//迭代器实现删除指定图书

vector::iterator itor2;

for (vector::iterator iter = books.begin(); iter != books.end(); )

{

if (log == iter->id)

{

cout <<"将删除的图书信息如下"<< endl;

wcout << *iter;

int sure = 0;

cout <<"确定删除?(1确定，0取消)"<< endl;

cin >> sure;

if (sure == 0)

return;

//开始在内存中删除

itor2 = iter;

books.erase(itor2);

cout <<"编号为"<< log <<"的图书已删除"<< endl;

return;

}

else

iter++;

}

cout <<"图书不存在无法删除"<< endl;

return;

}

void add_book()

{

book new_book;

cout <<"************请输入新图书信息************"<< endl;

wcin >> new_book;

books.push_back(new_book);

return;

}