图书管理系统C++代码

下面是一个简单的图书管理系统的C++代码示例：

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

using namespace std;

struct Book {
    string title;
    string author;
    int year;
};

vector<Book> library;

void addBook() {
    Book newBook;
    cout << "Enter book title: ";
    getline(cin, newBook.title);
    cout << "Enter book author: ";
    getline(cin, newBook.author);
    cout << "Enter publication year: ";
    cin >> newBook.year;
    cin.ignore(); // 清除输入缓冲区中的换行符
    library.push_back(newBook);
    cout << "Book added successfully!" << endl;
}

void displayBooks() {
    if (library.empty()) {
        cout << "Library is empty." << endl;
        return;
    }

    cout << "Books in the library:" << endl;
    for (const Book& book : library) {
        cout << "Title: " << book.title << endl;
        cout << "Author: " << book.author << endl;
        cout << "Publication Year: " << book.year << endl;
        cout << "-------------------------" << endl;
    }
}

int main() {
    int choice;

    do {
        cout << endl;
        cout << "========= Library Management System =========" << endl;
        cout << "1. Add Book" << endl;
        cout << "2. Display Books" << endl;
        cout << "3. Exit" << endl;
        cout << "Enter your choice: ";
        cin >> choice;
        cin.ignore(); // 清除输入缓冲区中的换行符

        switch (choice) {
            case 1:
                addBook();
                break;
            case 2:
                displayBooks();
                break;
            case 3:
                cout << "Exiting the program. Goodbye!" << endl;
                break;
            default:
                cout << "Invalid choice. Please try again." << endl;
        }
    } while (choice != 3);

    return 0;
}

这是一个简单的图书管理系统，它可以让用户添加书籍和显示已添加的书籍。用户可以通过在控制台中输入选项来执行不同的操作。