C++ で簡単なアドレス帳プログラムを作成するにはどうすればよいですか?

struct AddressBookEntry {
    std::string name;
    std::string phoneNumber;
    std::string address;
};

#include <iostream>
#include <vector>

std::vector<AddressBookEntry> addressBook; // 存储地址簿条目的全局变量

// 添加新条目
void addEntry() {
    AddressBookEntry entry;
    std::cout << "请输入姓名：";
    std::getline(std::cin, entry.name);
    std::cout << "请输入电话号码：";
    std::getline(std::cin, entry.phoneNumber);
    std::cout << "请输入地址：";
    std::getline(std::cin, entry.address);
    addressBook.push_back(entry);
    std::cout << "新增条目成功！
";
}

// 查找条目
void findEntry() {
    std::string name;
    std::cout << "请输入要查找的姓名：";
    std::getline(std::cin, name);
    for (const auto& entry : addressBook) {
        if (entry.name == name) {
            std::cout << "姓名：" << entry.name << "
";
            std::cout << "电话号码：" << entry.phoneNumber << "
";
            std::cout << "地址：" << entry.address << "
";
            return;
        }
    }
    std::cout << "未找到匹配的条目。
";
}

// 更新条目
void updateEntry() {
    std::string name;
    std::cout << "请输入要更新的姓名：";
    std::getline(std::cin, name);
    for (auto& entry : addressBook) {
        if (entry.name == name) {
            std::cout << "请输入新的电话号码：";
            std::getline(std::cin, entry.phoneNumber);
            std::cout << "请输入新的地址：";
            std::getline(std::cin, entry.address);
            std::cout << "更新条目成功！
";
            return;
        }
    }
    std::cout << "未找到匹配的条目。
";
}

// 删除条目
void deleteEntry() {
    std::string name;
    std::cout << "请输入要删除的姓名：";
    std::getline(std::cin, name);
    for (auto it = addressBook.begin(); it != addressBook.end(); ++it) {
        if (it->name == name) {
            addressBook.erase(it);
            std::cout << "删除条目成功！
";
            return;
        }
    }
    std::cout << "未找到匹配的条目。
";
}

// 显示地址簿
void displayAddressBook() {
    if (addressBook.empty()) {
        std::cout << "地址簿为空。
";
        return;
    }
    for (const auto& entry : addressBook) {
        std::cout << "姓名：" << entry.name << "
";
        std::cout << "电话号码：" << entry.phoneNumber << "
";
        std::cout << "地址：" << entry.address << "
";
    }
}

// 主菜单
void mainMenu() {
    std::cout << "1. 添加新条目
";
    std::cout << "2. 查找条目
";
    std::cout << "3. 更新条目
";
    std::cout << "4. 删除条目
";
    std::cout << "5. 显示地址簿
";
    std::cout << "0. 退出程序
";
    std::cout << "请选择操作：";
}

int main() {
    int choice;
    
    do {
        mainMenu();
        std::cin >> choice;
        std::cin.ignore(); // 忽略输入缓冲区中的换行符
        std::cout << "
";
        
        switch (choice) {
            case 1:
                addEntry();
                break;
            case 2:
                findEntry();
                break;
            case 3:
                updateEntry();
                break;
            case 4:
                deleteEntry();
                break;
            case 5:
                displayAddressBook();
                break;
            case 0:
                std::cout << "退出程序。
";
                break;
            default:
                std::cout << "无效的选择。
";
                break;
        }
        
        std::cout << "
";
    } while (choice != 0);
    
    return 0;
}