用c++实现一个完整的团购订单信息管理系统。该系统现团购订单信息的添加、查找、修改、删除、浏览等功能。要求输入登录口令，口令正确才可以继续操作。用结构体数组实现。具体功能说明如下。 （1)添加订单。 输入要添加的订单信息，包括订单编号(唯一）、商品编号、商品名称、商品单价、商品数量、收件人地址、收件人姓名、收件人电话等信息。判断订单编号是否已经存在，若存在则重新输入。将订单信息存入结构体数组中。 （2）查找订单。 设置二级菜单，可以通过订单编号、商品编号、收件人姓名等多途径进行订单查询，查 找出符合条件的一条或多条记录，并输出显示。 （3）修改订单。 先按订单编号查找订单，然后修改其信息。除订单编号外，可以修改商品编号、商品名 称、商品单价、商品数量、收件人地址、收件人姓名、收件人电话等信息。 （4）删除订单。 可输入订单编号进行删除，这时查询到的订单唯一，可直接删除，删除前要进行确认,确认是否真要删除。也可通过商品编号、收件人姓名等进行删除，这时查找到的订单不唯一，显示出所有符合条件的订单，要求输入要删除的订单号，删除唯一订单。 （5）浏览订单。 遍历存有所有订单信息的顺序表，按顺序依次显示所有订单。若无订单，则提示系统中无订单。

以下是一个简单的团购订单信息管理系统的 C++ 实现，代码中使用结构体数组实现存储订单信息，并使用口令保护系统。具体功能实现如下：

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

const int MAX_ORDERS = 100;   // 最大订单数量

// 订单信息结构体
struct Order {
    string orderNo;     // 订单编号
    string productNo;   // 商品编号
    string productName; // 商品名称
    double price;       // 商品单价
    int quantity;       // 商品数量
    string address;     // 收件人地址
    string name;        // 收件人姓名
    string phone;       // 收件人电话
};

// 订单管理系统类
class OrderManagementSystem {
public:
    OrderManagementSystem(string password);  // 构造函数
    void run();                              // 运行系统
private:
    Order orders[MAX_ORDERS];   // 存储所有订单信息的结构体数组
    int orderCount;             // 订单数量
    string password;            // 系统登录密码

    // 私有成员函数
    void addOrder();            // 添加订单
    void searchOrder();         // 查找订单
    void modifyOrder();         // 修改订单
    void deleteOrder();         // 删除订单
    void browseOrders();        // 浏览订单
};

// 构造函数
OrderManagementSystem::OrderManagementSystem(string password) {
    orderCount = 0;
    this->password = password;
}

// 运行系统
void OrderManagementSystem::run() {
    // 输入登录口令
    string inputPwd;
    cout << "请输入登录口令：";
    cin >> inputPwd;
    if (inputPwd != password) {
        cout << "口令错误，系统无法启动！" << endl;
        return;
    }

    // 显示功能菜单
    cout << "欢迎使用团购订单信息管理系统！" << endl;
    while (true) {
        cout << "请选择要执行的操作：" << endl;
        cout << "1. 添加订单" << endl;
        cout << "2. 查找订单" << endl;
        cout << "3. 修改订单" << endl;
        cout << "4. 删除订单" << endl;
        cout << "5. 浏览订单" << endl;
        cout << "6. 退出系统" << endl;
        int choice;
        cin >> choice;

        switch (choice) {
        case 1:
            addOrder();
            break;
        case 2:
            searchOrder();
            break;
        case 3:
            modifyOrder();
            break;
        case 4:
            deleteOrder();
            break;
        case 5:
            browseOrders();
            break;
        case 6:
            cout << "感谢使用团购订单信息管理系统，再见！" << endl;
            return;
        default:
            cout << "无效的选项，请重新选择。" << endl;
        }
    }
}

// 添加订单
void OrderManagementSystem::addOrder() {
    // 输入订单信息
    Order order;
    cout << "请输入订单编号：";
    cin >> order.orderNo;

    // 判断订单编号是否已经存在
    for (int i = 0; i < orderCount; i++) {
        if (orders[i].orderNo == order.orderNo) {
            cout << "订单编号已经存在，请重新输入。" << endl;
            return;
        }
    }

    cout << "请输入商品编号：";
    cin >> order.productNo;
    cout << "请输入商品名称：";
    cin >> order.productName;
    cout << "请输入商品单价：";
    cin >> order.price;
    cout << "请输入商品数量：";
    cin >> order.quantity;
    cout << "请输入收件人地址：";
    cin >> order.address;
    cout << "请输入收件人姓名：";
    cin >> order.name;
    cout << "请输入收件人电话：";
    cin >> order.phone;

    // 将订单信息存入数组
    orders[orderCount++] = order;
    cout << "订单添加成功！" << endl;
}

// 查找订单
void OrderManagementSystem::searchOrder() {
    cout << "请选择查询方式：" << endl;
    cout << "1. 按订单编号查询" << endl;
    cout << "2. 按商品编号查询" << endl;
    cout << "3. 按收件人姓名查询" << endl;
    int choice;
    cin >> choice;

    switch (choice) {
    case 1: {
        string orderNo;
        cout << "请输入订单编号：";
        cin >> orderNo;
        bool found = false;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].orderNo == orderNo) {
                cout << "订单信息如下：" << endl;
                cout << "订单编号：" << orders[i].orderNo << endl;
                cout << "商品编号：" << orders[i].productNo << endl;
                cout << "商品名称：" << orders[i].productName << endl;
                cout << "商品单价：" << orders[i].price << endl;
                cout << "商品数量：" << orders[i].quantity << endl;
                cout << "收件人地址：" << orders[i].address << endl;
                cout << "收件人姓名：" << orders[i].name << endl;
                cout << "收件人电话：" << orders[i].phone << endl;
                found = true;
                break;
            }
        }
        if (!found) {
            cout << "未找到订单信息！" << endl;
        }
        break;
    }
    case 2: {
        string productNo;
        cout << "请输入商品编号：";
        cin >> productNo;
        bool found = false;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].productNo == productNo) {
                cout << "订单编号：" << orders[i].orderNo << endl;
                cout << "商品编号：" << orders[i].productNo << endl;
                cout << "商品名称：" << orders[i].productName << endl;
                cout << "商品单价：" << orders[i].price << endl;
                cout << "商品数量：" << orders[i].quantity << endl;
                cout << "收件人地址：" << orders[i].address << endl;
                cout << "收件人姓名：" << orders[i].name << endl;
                cout << "收件人电话：" << orders[i].phone << endl;
                found = true;
            }
        }
        if (!found) {
            cout << "未找到订单信息！" << endl;
        }
        break;
    }
    case 3: {
        string name;
        cout << "请输入收件人姓名：";
        cin >> name;
        bool found = false;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].name == name) {
                cout << "订单编号：" << orders[i].orderNo << endl;
                cout << "商品编号：" << orders[i].productNo << endl;
                cout << "商品名称：" << orders[i].productName << endl;
                cout << "商品单价：" << orders[i].price << endl;
                cout << "商品数量：" << orders[i].quantity << endl;
                cout << "收件人地址：" << orders[i].address << endl;
                cout << "收件人姓名：" << orders[i].name << endl;
                cout << "收件人电话：" << orders[i].phone << endl;
                found = true;
            }
        }
        if (!found) {
            cout << "未找到订单信息！" << endl;
        }
        break;
    }
    default:
        cout << "无效的选项，请重新选择。" << endl;
    }
}

// 修改订单
void OrderManagementSystem::modifyOrder() {
    string orderNo;
    cout << "请输入要修改的订单编号：";
    cin >> orderNo;
    bool found = false;
    for (int i = 0; i < orderCount; i++) {
        if (orders[i].orderNo == orderNo) {
            cout << "请输入要修改的信息：" << endl;
            cout << "商品编号（原值：" << orders[i].productNo << "）：";
            cin >> orders[i].productNo;
            cout << "商品名称（原值：" << orders[i].productName << "）：";
            cin >> orders[i].productName;
            cout << "商品单价（原值：" << orders[i].price << "）：";
            cin >> orders[i].price;
            cout << "商品数量（原值：" << orders[i].quantity << "）：";
            cin >> orders[i].quantity;
            cout << "收件人地址（原值：" << orders[i].address << "）：";
            cin >> orders[i].address;
            cout << "收件人姓名（原值：" << orders[i].name << "）：";
            cin >> orders[i].name;
            cout << "收件人电话（原值：" << orders[i].phone << "）：";
            cin >> orders[i].phone;
            cout << "订单信息修改成功！" << endl;
            found = true;
            break;
        }
    }
    if (!found) {
        cout << "未找到订单信息！" << endl;
    }
}

// 删除订单
void OrderManagementSystem::deleteOrder() {
    cout << "请选择删除方式：" << endl;
    cout << "1. 按订单编号删除" << endl;
    cout << "2. 按商品编号删除" << endl;
    cout << "3. 按收件人姓名删除" << endl;
    int choice;
    cin >> choice;

    switch (choice) {
    case 1: {
        string orderNo;
        cout << "请输入要删除的订单编号：";
        cin >> orderNo;
        bool found = false;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].orderNo == orderNo) {
                cout << "订单信息如下：" << endl;
                cout << "订单编号：" << orders[i].orderNo << endl;
                cout << "商品编号：" << orders[i].productNo << endl;
                cout << "商品名称：" << orders[i].productName << endl;
                cout << "商品单价：" << orders[i].price << endl;
                cout << "商品数量：" << orders[i].quantity << endl;
                cout << "收件人地址：" << orders[i].address << endl;
                cout << "收件人姓名：" << orders[i].name << endl;
                cout << "收件人电话：" << orders[i].phone << endl;
                cout << "确认要删除此订单吗？（Y/N）";
                char confirm;
                cin >> confirm;
                if (confirm == 'Y' || confirm == 'y') {
                    for (int j = i; j < orderCount - 1; j++) {
                        orders[j] = orders[j + 1];
                    }
                    orderCount--;
                    cout << "订单删除成功！" << endl;
                }
                found = true;
                break;
            }
        }
        if (!found) {
            cout << "未找到订单信息！" << endl;
        }
        break;
    }
    case 2: {
        string productNo;
        cout << "请输入要删除的商品编号：";
        cin >> productNo;
        int count = 0;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].productNo == productNo) {
                count++;
            }
        }
        if (count == 1) {
            for (int i = 0; i < orderCount; i++) {
                if (orders[i].productNo == productNo) {
                    cout << "订单信息如下：" << endl;
                    cout << "订单编号：" << orders[i].orderNo << endl;
                    cout << "商品编号：" << orders[i].productNo << endl;
                    cout << "商品名称：" << orders[i].productName << endl;
                    cout << "商品单价：" << orders[i].price << endl;
                    cout << "商品数量：" << orders[i].quantity << endl;
                    cout << "收件人地址：" << orders[i].address << endl;
                    cout << "收件人姓名：" << orders[i].name << endl;
                    cout << "收件人电话：" << orders[i].phone << endl;
                    cout << "确认要删除此订单吗？（Y/N）";
                    char confirm;
                    cin >> confirm;
                    if (confirm == 'Y' || confirm == 'y') {
                        for (int j = i; j < orderCount - 1; j++) {
                            orders[j] = orders[j + 1];
                        }
                        orderCount--;
                        cout << "订单删除成功！" << endl;
                    }
                    break;
                }
            }
        }
        else if (count > 1) {
            cout << "找到以下订单信息：" << endl;
            for (int i = 0; i < orderCount; i++) {
                if (orders[i].productNo == productNo) {
                    cout << "订单编号：" << orders[i].orderNo << endl;
                    cout << "商品编号：" << orders[i].productNo << endl;
                    cout << "商品名称：" << orders[i].productName << endl;
                    cout << "商品单价：" << orders[i].price << endl;
                    cout << "商品数量：" << orders[i].quantity << endl;
                    cout << "收件人地址：" << orders[i].address << endl;
                    cout << "收件人姓名：" << orders[i].name << endl;
                    cout << "收件人电话：" << orders[i].phone << endl;
                }
            }
            string orderNo;
            cout << "请输入要删除的订单编号：";
            cin >> orderNo;
            bool found = false;
            for (int i = 0; i < orderCount; i++) {
                if (orders[i].orderNo == orderNo) {
                    for (int j = i; j < orderCount - 1; j++) {
                        orders[j] = orders[j + 1];
                    }
                    orderCount--;
                    cout << "订单删除成功！" << endl;
                    found = true;
                    break;
                }
            }
            if (!found) {
                cout << "未找到订单信息！" << endl;
            }
        }
        else {
            cout << "未找到订单信息！" << endl;
        }
        break;
    }
    case 3: {
        string name;
        cout << "请输入收件人姓名：";
        cin >> name;
        int count = 0;
        for (int i = 0; i < orderCount; i++) {
            if (orders[i].name == name) {
                count++;
            }
        }
        if (count == 1) {
            for (int i = 0; i < orderCount; i++) {
                if (orders[i].name == name) {
                    cout << "订单信息如下：" << endl;
                    cout << "订单编号：" << orders[i].orderNo << endl;
                    cout << "商品编号：" << orders[i].productNo << endl;
                    cout << "商品名称：" << orders[i].productName << endl;
                    cout << "商品单价：" << orders[i].price << endl;
                    cout << "商品数量：" << orders[i].quantity << endl;
                    cout << "收件人地址：" << orders[i].address << endl;
                    cout << "收件人姓名：" << orders[i].name << endl;
                    cout << "收件人电话：" << orders[i].phone << endl;
                    cout << "确认要删除此订单吗？（Y/N）";
                    char confirm;
                    cin >> confirm;
                    if (confirm == 'Y' || confirm == 'y') {
                        for (int j = i; j < orderCount - 1; j++) {
                            orders[j] = orders[j + 1];
                        }
                        orderCount--;
                        cout << "订单删除成功！" << endl;
                    }
                    break;
                }
            }
        }
        else if (count > 1) {
            cout << "找到以下订单信息：" << endl;
            for (int i = 0; i < orderCount; i++) {
                if (orders[i].name == name)