使用c++，运用class和vector的知识，写出一个书店管理系统的代码，要有菜单，数据用Excel文件保存，要求完成的基本功能： 1、进货入库记录。 2、销售出货记录。 3、图书信息查询：可通过书名、作者等途径查询某本图书的详细信息（含书名、作者、出版社、页数、最新入库时间、库存量、价格等）。 4、自动预警提示（当某图书的库存量为1时自动预警提示） 5、数据存储：以文件方式存储出入库记录说明与要求： 1、对象集合的管理可以使用STL中的相关容器类；

好的，以下是一个简单的书店管理系统的代码示例。其中，我们使用了class和vector来管理书店的图书信息和库存记录，使用Excel文件来保存数据。

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

using namespace std;

// 定义一个Book类，用于存储书籍信息
class Book {
public:
    string name; // 书名
    string author; // 作者
    string publisher; // 出版社
    int pages; // 页数
    int stock; // 库存量
    float price; // 价格
    string lastUpdate; // 最新入库时间

    // 构造函数，用于初始化Book对象
    Book(string name, string author, string publisher, int pages, int stock, float price, string lastUpdate) {
        this->name = name;
        this->author = author;
        this->publisher = publisher;
        this->pages = pages;
        this->stock = stock;
        this->price = price;
        this->lastUpdate = lastUpdate;
    }
};

// 定义一个Bookstore类，用于管理书店的图书信息和库存记录
class Bookstore {
private:
    vector<Book> books; // 存储图书信息的向量

public:
    // 从Excel文件中读取图书信息，并存储到books向量中
    void loadBooks(string filename) {
        ifstream file(filename);
        string line;
        while (getline(file, line)) {
            string name, author, publisher, lastUpdate;
            int pages, stock;
            float price;
            stringstream ss(line);
            getline(ss, name, ',');
            getline(ss, author, ',');
            getline(ss, publisher, ',');
            ss >> pages;
            ss.ignore();
            ss >> stock;
            ss.ignore();
            ss >> price;
            ss.ignore();
            getline(ss, lastUpdate, ',');
            books.push_back(Book(name, author, publisher, pages, stock, price, lastUpdate));
        }
        file.close();
    }

    // 将books向量中的图书信息保存到Excel文件中
    void saveBooks(string filename) {
        ofstream file(filename);
        for (auto book : books) {
            file << book.name << "," << book.author << "," << book.publisher << "," << book.pages << ","
                 << book.stock << "," << book.price << "," << book.lastUpdate << endl;
        }
        file.close();
    }

    // 添加一本新书
    void addBook(Book book) {
        books.push_back(book);
    }

    // 删除一本图书
    void removeBook(string name) {
        books.erase(remove_if(books.begin(), books.end(), [name](Book book) { return book.name == name; }), books.end());
    }

    // 更新一本图书的信息
    void updateBook(string name, Book book) {
        removeBook(name);
        addBook(book);
    }

    // 查询一本图书的详细信息
    void searchBook(string name) {
        auto it = find_if(books.begin(), books.end(), [name](Book book) { return book.name == name; });
        if (it != books.end()) {
            cout << "书名：" << it->name << endl;
            cout << "作者：" << it->author << endl;
            cout << "出版社：" << it->publisher << endl;
            cout << "页数：" << it->pages << endl;
            cout << "库存量：" << it->stock << endl;
            cout << "价格：" << it->price << endl;
            cout << "最新入库时间：" << it->lastUpdate << endl;
        } else {
            cout << "未找到该书！" << endl;
        }
    }

    // 进货入库
    void stockIn(string name, int count) {
        auto it = find_if(books.begin(), books.end(), [name](Book book) { return book.name == name; });
        if (it != books.end()) {
            it->stock += count;
            cout << "成功入库 " << count << " 本《" << name << "》！" << endl;
            // 更新最新入库时间
            time_t t = time(nullptr);
            char buffer[80];
            strftime(buffer, 80, "%Y-%m-%d %H:%M:%S", localtime(&t));
            it->lastUpdate = buffer;
            // 检查库存量是否低于预警值
            if (it->stock <= 1) {
                cout << "警告：《" << name << "》的库存量已低于预警值！" << endl;
            }
        } else {
            cout << "未找到该书！" << endl;
        }
    }

    // 销售出货
    void sellOut(string name, int count) {
        auto it = find_if(books.begin(), books.end(), [name](Book book) { return book.name == name; });
        if (it != books.end()) {
            if (it->stock < count) {
                cout << "库存不足，无法出货！" << endl;
            } else {
                it->stock -= count;
                cout << "成功出货 " << count << " 本《" << name << "》！" << endl;
                // 更新最新出货时间
                time_t t = time(nullptr);
                char buffer[80];
                strftime(buffer, 80, "%Y-%m-%d %H:%M:%S", localtime(&t));
                it->lastUpdate = buffer;
                // 检查库存量是否低于预警值
                if (it->stock <= 1) {
                    cout << "警告：《" << name << "》的库存量已低于预警值！" << endl;
                }
            }
        } else {
            cout << "未找到该书！" << endl;
        }
    }

    // 显示菜单
    void showMenu() {
        cout << "欢迎使用书店管理系统！" << endl;
        cout << "1. 进货入库" << endl;
        cout << "2. 销售出货" << endl;
        cout << "3. 图书信息查询" << endl;
        cout << "4. 显示所有图书" << endl;
        cout << "5. 退出系统" << endl;
    }

    // 运行管理系统
    void run() {
        int choice;
        do {
            showMenu();
            cout << "请输入您的选择：";
            cin >> choice;
            switch (choice) {
                case 1: {
                    string name;
                    int count;
                    cout << "请输入书名：";
                    cin >> name;
                    cout << "请输入入库数量：";
                    cin >> count;
                    stockIn(name, count);
                    break;
                }
                case 2: {
                    string name;
                    int count;
                    cout << "请输入书名：";
                    cin >> name;
                    cout << "请输入出货数量：";
                    cin >> count;
                    sellOut(name, count);
                    break;
                }
                case 3: {
                    string name;
                    cout << "请输入书名：";
                    cin >> name;
                    searchBook(name);
                    break;
                }
                case 4: {
                    for (auto book : books) {
                        cout << "书名：" << book.name << endl;
                        cout << "作者：" << book.author << endl;
                        cout << "出版社：" << book.publisher << endl;
                        cout << "页数：" << book.pages << endl;
                        cout << "库存量：" << book.stock << endl;
                        cout << "价格：" << book.price << endl;
                        cout << "最新入/出库时间：" << book.lastUpdate << endl;
                        cout << endl;
                    }
                    break;
                }
                case 5: {
                    cout << "感谢使用书店管理系统！" << endl;
                    break;
                }
                default: {
                    cout << "无效的选择，请重新输入！" << endl;
                    break;
                }
            }
            cout << endl;
        } while (choice != 5);
    }
};

int main() {
    Bookstore store;
    store.loadBooks("books.csv"); // 从Excel文件中读取图书信息
    store.run(); // 运行管理系统
    store.saveBooks("books.csv"); // 将图书信息保存到Excel文件中
    return 0;
}

以上代码仅供参考，实际实现中可能需要根据具体需求进行修改和完善。