C++图书管理系统

爱琴海kkk 博客 2023-12-07 1 0

设计一个图书信息管理系统，实现以下功能：系统以菜单方式工作，图书信息录入功能(图书信息用文件保存) ；图书信息包括：登录号、书名、作者名、分类号、出版单位、出版时间、价格等；图书信息浏览功能（输出所有图书信息）；查询和排序功能：按书名查询（显示所有同名的书），按作者名查询（显示所有该作者的书）；图书信息的删除与修改。

以下是完整代码，仅供大家参考：

#include

using namespace std;

// 定义图书信息类

class BookInfo

{

public:

int ID; // 登录号

string name; // 书名

string author; // 作者名

int category; // 分类号

string publisher; // 出版单位

string publishDate; // 出版时间

double price; // 价格

// 构造函数

BookInfo(int id, string n, string a, int c, string p, string pd, double pr)

{

ID = id;

name = n;

author = a;

category = c;

publisher = p;

publishDate = pd;

price = pr;

}

// 打印图书信息

void print() {

cout << "登录号：" << ID << endl;

cout << "书名：" << name << endl;

cout << "作者名：" << author << endl;

cout << "分类号：" << category << endl;

cout << "出版单位：" << publisher << endl;

cout << "出版时间：" << publishDate << endl;

cout << "价格：" << price << endl;

}

// 将图书信息转为字符串

string toString()

{

string str = to_string(ID) + "," + name + "," + author + "," + to_string(category) + "," + publisher + "," + publishDate + "," + to_string(price);

return str;

}

};

// 定义图书信息管理

class BookManager

{

private:

vector books; // 图书信息数组

string filename; // 保存图书信息的文件名

public:

// 构造函数

BookManager(string fn)

{

filename = fn;

loadBooks();

}

// 添加图书信息

void addBook()

{

int id, category;

string name, author, publisher, publishDate;

double price;

cout << "请输入登录号：";

cin >> id;

cout << "请输入书名：";

cin >> name;

cout << "请输入作者名：";

cin >> author;

cout << "请输入分类号：";

cin >> category;

cout << "请输入出版单位：";

cin >> publisher;

cout << "请输入出版时间：";

cin >> publishDate;

cout << "请输入价格：";

cin >> price;

BookInfo book(id, name, author, category, publisher, publishDate, price);

books.push_back(book);

saveBooks();

cout << "添加成功！" << endl;

}

// 查找图书信息

void findBookByName()

{

string name;

cout << "请输入要查找的书名：";

cin >> name;

vector results;

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

{

if (books[i].name == name)

{

results.push_back(books[i]);

}

if (results.size() == 0)

{

cout << "未找到该书名的图书信息！" << endl;

}

else

{

cout << "共找到" << results.size() << "本书：" << endl;

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

{

results[i].print();

cout << endl;

}

// 查找图书信息

void findBookByAuthor()

{

string author;

cout << "请输入要查找的作者名:";

cin >> author;

vector results;

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

{

if (books[i].author == author)

{

results.push_back(books[i]);

}

if (results.size() == 0)

{

cout << "未找到该作者名的图书信息！" << endl;

}

else

{

cout << "共找到" << results.size() << "本书：" << endl;

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

{

results[i].print();

cout << endl;

}

// 删除图书信息

void deleteBook()

{

int id;

cout << "请输入要删除的登录号：";

cin >> id;

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

{

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

{

books.erase(books.begin() + i);

saveBooks();

cout << "删除成功！" << endl;

return;

}

cout << "未找到该图书信息！" << endl;

}

// 修改图书信息

void modifyBook()

{

int id;

cout << "请输入要修改的登录号：";

cin >> id;

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

{

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

{

cout << "请输入新的书名：";

cin >> books[i].name;

cout << "请输入新的作者名：";

cin >> books[i].author;

cout << "请输入新的分类号：";

cin >> books[i].category;

cout << "请输入新的出版单位：";

cin >> books[i].publisher;

cout << "请输入新的出版时间：";

cin >> books[i].publishDate;

cout << "请输入新的价格：";

cin >> books[i].price;

saveBooks();

cout << "修改成功！" << endl;

return;

}

cout << "未找到该图书信息！" << endl;

}

// 按价格排序

void sortByPrice()

{

sort(books.begin(), books.end(), [](BookInfo a, BookInfo b) {

return a.price < b.price;

});

cout << "按价格排序成功！" << endl;

}

// 显示所有图书信息

void showAllBooks()

{

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

{

books[i].print();

cout << endl;

}

// 显示菜单

void showMenu()

{

cout << "|------------------------------------|" << endl;

cout << "|||||||||欢迎使用图书管理系统|||||||||" << endl;

cout << "|------------------------------------|" << endl;

cout << "|____________________________________|" << endl;

cout << "|***********1. 添加图书信息**********|" << endl;

cout << "|***********2. 按书名查询************|" << endl;

cout << "|***********3. 按作者名查询**********|" << endl;

cout << "|***********4. 删除图书信息**********|" << endl;

cout << "|***********5. 修改图书信息**********|" << endl;

cout << "|***********6. 按价格排序************|" << endl;

cout << "|***********7. 显示所有图书信息******|" << endl;

cout << "|***********0. 退出******************|" << endl;

cout << "|____________________________________|" << endl;

}

// 从文件中加载图书信息

void loadBooks()

{

ifstream file(filename);

if (file.is_open())

{

string line;

while (getline(file, line))

{

int id = stoi(line.substr(0, line.find(",")));