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 C++ 实现：

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

const int MAX_SIZE = 100; // 最大订单数

// 订单结构体
struct Order {
    string orderNumber;
    string productNumber;
    string productName;
    double productPrice;
    int productQuantity;
    string recipientAddress;
    string recipientName;
    string recipientPhone;
};

// 订单管理系统类
class OrderManagementSystem {
private:
    Order orders[MAX_SIZE]; // 订单数组
    int count; // 当前订单数
    string password; // 登录密码

public:
    OrderManagementSystem(string pwd) {
        count = 0;
        password = pwd;
    }

    // 添加订单
    void addOrder() {
        cout << "请输入订单信息：" << endl;
        Order newOrder;
        cin >> newOrder.orderNumber;

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

        cin >> newOrder.productNumber >> newOrder.productName
            >> newOrder.productPrice >> newOrder.productQuantity
            >> newOrder.recipientAddress >> newOrder.recipientName
            >> newOrder.recipientPhone;

        orders[count++] = newOrder;
        cout << "订单添加成功！" << endl;
    }

    // 查找订单
    void searchOrder() {
        cout << "请选择查找方式：" << endl;
        cout << "1. 订单编号" << endl;
        cout << "2. 商品编号" << endl;
        cout << "3. 收件人姓名" << endl;

        int choice;
        cin >> choice;

        if (choice == 1) {
            string orderNumber;
            cout << "请输入订单编号：" << endl;
            cin >> orderNumber;

            for (int i = 0; i < count; i++) {
                if (orders[i].orderNumber == orderNumber) {
                    displayOrder(orders[i]);
                    return;
                }
            }

            cout << "没有找到订单！" << endl;
        }
        else if (choice == 2) {
            string productNumber;
            cout << "请输入商品编号：" << endl;
            cin >> productNumber;

            for (int i = 0; i < count; i++) {
                if (orders[i].productNumber == productNumber) {
                    displayOrder(orders[i]);
                }
            }
        }
        else if (choice == 3) {
            string recipientName;
            cout << "请输入收件人姓名：" << endl;
            cin >> recipientName;

            for (int i = 0; i < count; i++) {
                if (orders[i].recipientName == recipientName) {
                    displayOrder(orders[i]);
                }
            }
        }
        else {
            cout << "输入有误！" << endl;
        }
    }

    // 修改订单
    void modifyOrder() {
        string orderNumber;
        cout << "请输入要修改的订单编号：" << endl;
        cin >> orderNumber;

        for (int i = 0; i < count; i++) {
            if (orders[i].orderNumber == orderNumber) {
                cout << "请输入修改后的信息：" << endl;
                cin >> orders[i].productNumber >> orders[i].productName
                    >> orders[i].productPrice >> orders[i].productQuantity
                    >> orders[i].recipientAddress >> orders[i].recipientName
                    >> orders[i].recipientPhone;

                cout << "订单修改成功！" << endl;
                return;
            }
        }

        cout << "没有找到订单！" << endl;
    }

    // 删除订单
    void deleteOrder() {
        cout << "请选择删除方式：" << endl;
        cout << "1. 订单编号" << endl;
        cout << "2. 商品编号" << endl;
        cout << "3. 收件人姓名" << endl;

        int choice;
        cin >> choice;

        if (choice == 1) {
            string orderNumber;
            cout << "请输入要删除的订单编号：" << endl;
            cin >> orderNumber;

            for (int i = 0; i < count; i++) {
                if (orders[i].orderNumber == orderNumber) {
                    displayOrder(orders[i]);

                    cout << "确认要删除该订单吗？(Y/N)" << endl;
                    char c;
                    cin >> c;

                    if (c == 'Y' || c == 'y') {
                        for (int j = i; j < count - 1; j++) {
                            orders[j] = orders[j + 1];
                        }

                        count--;
                        cout << "订单删除成功！" << endl;
                    }

                    return;
                }
            }

            cout << "没有找到订单！" << endl;
        }
        else if (choice == 2) {
            string productNumber;
            cout << "请输入要删除的商品编号：" << endl;
            cin >> productNumber;

            int deleteCount = 0;
            for (int i = 0; i < count; i++) {
                if (orders[i].productNumber == productNumber) {
                    displayOrder(orders[i]);

                    cout << "确认要删除该订单吗？(Y/N)" << endl;
                    char c;
                    cin >> c;

                    if (c == 'Y' || c == 'y') {
                        for (int j = i; j < count - 1; j++) {
                            orders[j] = orders[j + 1];
                        }

                        count--;
                        deleteCount++;
                    }
                }
            }

            if (deleteCount == 0) {
                cout << "没有找到订单！" << endl;
            }
            else {
                cout << "共删除了 " << deleteCount << " 个订单！" << endl;
            }
        }
        else if (choice == 3) {
            string recipientName;
            cout << "请输入收件人姓名：" << endl;
            cin >> recipientName;

            int deleteCount = 0;
            for (int i = 0; i < count; i++) {
                if (orders[i].recipientName == recipientName) {
                    displayOrder(orders[i]);

                    cout << "确认要删除该订单吗？(Y/N)" << endl;
                    char c;
                    cin >> c;

                    if (c == 'Y' || c == 'y') {
                        for (int j = i; j < count - 1; j++) {
                            orders[j] = orders[j + 1];
                        }

                        count--;
                        deleteCount++;
                    }
                }
            }

            if (deleteCount == 0) {
                cout << "没有找到订单！" << endl;
            }
            else {
                cout << "共删除了 " << deleteCount << " 个订单！" << endl;
            }
        }
        else {
            cout << "输入有误！" << endl;
        }
    }

    // 浏览订单
    void browseOrder() {
        if (count == 0) {
            cout << "系统中无订单！" << endl;
        }
        else {
            cout << "所有订单信息如下：" << endl;
            for (int i = 0; i < count; i++) {
                displayOrder(orders[i]);
            }
        }
    }

    // 显示订单信息
    void displayOrder(Order order) {
        cout << "订单编号：" << order.orderNumber << endl;
        cout << "商品编号：" << order.productNumber << endl;
        cout << "商品名称：" << order.productName << endl;
        cout << "商品单价：" << order.productPrice << endl;
        cout << "商品数量：" << order.productQuantity << endl;
        cout << "收件人地址：" << order.recipientAddress << endl;
        cout << "收件人姓名：" << order.recipientName << endl;
        cout << "收件人电话：" << order.recipientPhone << endl;
        cout << endl;
    }

    // 运行订单管理系统
    void run() {
        cout << "请输入登录口令：" << endl;
        string inputPassword;
        cin >> inputPassword;

        if (inputPassword != password) {
            cout << "登录失败！" << endl;
            return;
        }

        cout << "欢迎使用订单管理系统！" << endl;

        while (true) {
            cout << "请选择功能：" << 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:
                browseOrder();
                break;
            case 6:
                cout << "谢谢使用，再见！" << endl;
                return;
            default:
                cout << "输入有误！" << endl;
                break;
            }
        }
    }
};

int main() {
    OrderManagementSystem system("123456");
    system.run();
    return 0;
}

注意：这只是一个简单的实现，还有很多细节需要完善，比如输入的数据类型、错误处理等。