综合项目：图书管理系统 - C++ 面向对象编程

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第 12 关：综合项目：图书管理系统

C++进阶

📖 本课目标

本关属于《C++ 面向对象编程》第 12 课。阅读右侧代码模板，理解每一行的作用，然后动手修改并完成练习。

🎯 本课要点

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

🛠 学习方式

阅读右侧代码模板中的注释与实现
修改代码，尝试达成新的效果
点击「运行」查看实际输出
确认理解后点击「提交」标记本关完成

💡 说明

本关为 C++，浏览器内无法真正执行该语言。当前「运行」输出为演示结果，请在本地环境中编译运行以验证代码。

main.pytest.py

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;

// 图书类
class Book {
private:
    string isbn;
    string title;
    string author;
    bool borrowed;
    
public:
    Book(string i, string t, string a) 
        : isbn(i), title(t), author(a), borrowed(false) {}
    
    string getIsbn() const { return isbn; }
    string getTitle() const { return title; }
    string getAuthor() const { return author; }
    bool isBorrowed() const { return borrowed; }
    
    void borrow() { borrowed = true; }
    void returnBook() { borrowed = false; }
    
    void display() const {
        cout << "ISBN: " << isbn << endl;
        cout << "书名: " << title << endl;
        cout << "作者: " << author << endl;
        cout << "状态: " << (borrowed ? "已借出" : "可借") << endl;
    }
};

// 图书馆类
class Library {
private:
    vector<Book> books;
    
public:
    void addBook(const Book& book) {
        books.push_back(book);
        cout << "添加图书: " << book.getTitle() << endl;
    }
    
    void borrowBook(const string& isbn) {
        for (auto& book : books) {
            if (book.getIsbn() == isbn) {
                if (!book.isBorrowed()) {
                    book.borrow();
                    cout << "借书成功: " << book.getTitle() << endl;
                } else {
                    cout << "该书已被借出" << endl;
                }
                return;
            }
        }
        cout << "未找到该图书" << endl;
    }
    
    void returnBook(const string& isbn) {
        for (auto& book : books) {
            if (book.getIsbn() == isbn) {
                if (book.isBorrowed()) {
                    book.returnBook();
                    cout << "还书成功: " << book.getTitle() << endl;
                } else {
                    cout << "该书未被借出" << endl;
                }
                return;
            }
        }
        cout << "未找到该图书" << endl;
    }
    
    void displayAll() const {
        cout << "\n图书馆藏书:" << endl;
        cout << string(50, '=') << endl;
        for (const auto& book : books) {
            book.display();
            cout << string(50, '-') << endl;
        }
    }
    
    void searchByTitle(const string& keyword) const {
        cout << "\n搜索结果:" << endl;
        bool found = false;
        for (const auto& book : books) {
            if (book.getTitle().find(keyword) != string::npos) {
                book.display();
                cout << string(50, '-') << endl;
                found = true;
            }
        }
        if (!found) {
            cout << "未找到匹配的图书" << endl;
        }
    }
};

int main() {
    Library library;
    
    library.addBook(Book("001", "C++ 程序设计", "张三"));
    library.addBook(Book("002", "数据结构", "李四"));
    library.addBook(Book("003", "算法导论", "王五"));
    
    library.displayAll();
    
    cout << "\n借书操作:" << endl;
    library.borrowBook("001");
    library.borrowBook("001"); // 应该失败
    
    cout << "\n搜索操作:" << endl;
    library.searchByTitle("数据");
    
    cout << "\n还书操作:" << endl;
    library.returnBook("001");
    
    return 0;
}

点击「运行」或「提交代码」查看结果

📖 查看本课说明

第 12 关：综合项目：图书管理系统

C++ · 进阶 · 《C++ 面向对象编程》

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

本关为 C++，浏览器无法真正编译运行，请在本地环境验证代码。