图书馆管理系统 c++

一个图书馆管理系统的基本模块包括：书籍信息管理、读者信息管理、借阅管理、归还管理等。下面是一个简单的 C++ 代码示例：

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>

using namespace std;

// 书籍信息结构体
struct Book {
    string name;
    string author;
    string publisher;
    string isbn;
    bool available;  // 是否可借
};

// 读者信息结构体
struct Reader {
    string name;
    string id;
    vector<Book*> borrowed_books;  // 已借书籍指针集合
};

vector<Book> books;  // 所有书籍
vector<Reader> readers;  // 所有读者

// 添加书籍
void add_book() {
    Book book;
    cout << "请输入书籍信息：" << endl;
    cout << "书名：";
    getline(cin, book.name);
    cout << "作者：";
    getline(cin, book.author);
    cout << "出版社：";
    getline(cin, book.publisher);
    cout << "ISBN：";
    getline(cin, book.isbn);
    book.available = true;
    books.push_back(book);
    cout << "添加成功！" << endl;
}

// 添加读者
void add_reader() {
    Reader reader;
    cout << "请输入读者信息：" << endl;
    cout << "姓名：";
    getline(cin, reader.name);
    cout << "学号/工号：";
    getline(cin, reader.id);
    readers.push_back(reader);
    cout << "添加成功！" << endl;
}

// 借书
void borrow_book() {
    string book_name;
    string reader_id;
    cout << "请输入借书信息：" << endl;
    cout << "书名：";
    getline(cin, book_name);
    cout << "借书人学号/工号：";
    getline(cin, reader_id);
    // 查找书籍
    auto book_iter = find_if(books.begin(), books.end(), [&book_name](const Book& book) {
        return book.name == book_name && book.available;
    });
    // 查找读者
    auto reader_iter = find_if(readers.begin(), readers.end(), [&reader_id](const Reader& reader) {
        return reader.id == reader_id;
    });
    if (book_iter == books.end()) {
        cout << "未找到该书籍或该书籍不可借！" << endl;
    } else if (reader_iter == readers.end()) {
        cout << "未找到该读者！" << endl;
    } else {
        // 借书成功，更新书籍和读者信息
        (*book_iter).available = false;
        (*reader_iter).borrowed_books.push_back(&(*book_iter));
        cout << "借书成功！" << endl;
    }
}

// 还书
void return_book() {
    string book_name;
    string reader_id;
    cout << "请输入还书信息：" << endl;
    cout << "书名：";
    getline(cin, book_name);
    cout << "借书人学号/工号：";
    getline(cin, reader_id);
    // 查找书籍
    auto book_iter = find_if(books.begin(), books.end(), [&book_name](const Book& book) {
        return book.name == book_name && !book.available;
    });
    // 查找读者
    auto reader_iter = find_if(readers.begin(), readers.end(), [&reader_id](const Reader& reader) {
        return reader.id == reader_id;
    });
    if (book_iter == books.end()) {
        cout << "未找到该书籍或该书籍已归还！" << endl;
    } else if (reader_iter == readers.end()) {
        cout << "未找到该读者！" << endl;
    } else {
        // 还书成功，更新书籍和读者信息
        (*book_iter).available = true;
        auto borrowed_books = &(*reader_iter).borrowed_books;
        auto borrowed_book_iter = find(borrowed_books->begin(), borrowed_books->end(), &(*book_iter));
        borrowed_books->erase(borrowed_book_iter);
        cout << "还书成功！" << endl;
    }
}

int main() {
    int choice;
    while (true) {
        cout << "请选择操作：1. 添加书籍 2. 添加读者 3. 借书 4. 还书 5. 退出" << endl;
        cin >> choice;
        cin.ignore();  // 忽略换行符
        switch (choice) {
            case 1:
                add_book();
                break;
            case 2:
                add_reader();
                break;
            case 3:
                borrow_book();
                break;
            case 4:
                return_book();
                break;
            case 5:
                return 0;
            default:
                cout << "无效操作！" << endl;
                break;
        }
    }
    return 0;
}

这个示例代码只是一个简单的图书馆管理系统模型，实际应用中还需要考虑更多因素，如借书期限、超期罚款、图书分类、读者类型等。