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   -> C++知识库 -> 学校食堂简易点餐管理系统(含用户登录且密码隐藏)C++ -> 正文阅读

[C++知识库]学校食堂简易点餐管理系统(含用户登录且密码隐藏)C++

作者:language-cpp

?系统运行步骤陈述：

  1. 运行程序进入用户登陆界面,输入账户及密码
  2. 如果账户以及密码输入正确则进入系统，显示登陆成功
  3. 紧接着以下须按照指示输入，所输入字母不区分大小写
  4. 进入系统后便可看见菜单选项，a,b,c,d,e五类菜及各类菜里面的菜品全称，简称和单价，以及八种口味及编号
  5. 按照提示输入自己想吃的哪类菜编号
  6. 进入该类菜之后输入想吃菜品的简称
  7. 下一步会提示输入口味，则输入口味编号
  8. 下一步会提示继续选择自己想吃的一类菜，继续的话则根据菜单输入相关字母，想退出的话直接按'q'或'Q'
  9. 则会统计所选菜的总数以及所选各类菜总价格（代码一见显示屏，代码二见statis.txt文件）

?源程序里面的注释我都给的很详细，就不在这里一一介绍啦，还是那句老话，写的很仓促，存在很多问题，希望大家不要见笑哈！下面给出两种代码。注意，两个功能完全一样，区别在于代码一输出在屏幕，代码二输出给文件。

源代码如下：?

代码一：（输入数据显示在屏幕上）

//ordersystem
//author:babysen
//date:2022/01/05-06

#include <iostream>
#include <string>
#include <conio.h>

using namespace std;

const int strsize = 30;
const string flavor[8] = {"三鲜", "甜", "微微辣", "微辣", "麻辣", "中辣", "超辣", "番茄"}; //口味

//构造显示函数：
void display_menu();        //显示菜单
void display_name();        //菜名
void display_preference();  //显示咸淡口味

//void display_sex();        //统计男女生人数
//构建结构体,其中s是性别的另一种表达，s=0,1;0为女性，1为男性

struct order
{
    char fullname[strsize];     //菜全名
    char abbreviation[strsize]; //菜简称
    int price;                  //价格
};

//输入结构体数组的内容

//热卖推荐菜单
order hsr[5] =
    {
        {"香锅", "香锅", 15},
        {"肉夹馍", "夹馍", 7},
        {"羊肉泡馍", "泡馍", 24},
        {"洛阳烩菜", "烩菜", 7},
        {"泡面加蛋", "煮泡面", 6}};

//饺子菜单
order dump[8] =
    {
        {"大份大肉莲菜", "大份莲菜", 10},
        {"小份大肉莲菜", "小份莲菜", 8},
        {"大份韭菜鸡蛋", "大份韭菜", 10},
        {"小份韭菜鸡蛋", "小份韭菜", 8},
        {"大份大葱牛肉", "大份牛肉", 12},
        {"小份大葱牛肉", "小份牛肉", 10},
        {"大份大葱羊肉", "大份羊肉", 12},
        {"小份大葱羊肉", "小份羊肉", 10}};

//面食菜单
order noodle[10] =
    {
        {"大碗三合一面", "大碗三合一", 11},
        {"小碗三合一面", "小碗三合一", 10},
        {"大碗二合一面", "大碗二合一", 10},
        {"小碗二合一面", "小碗二合一", 9},
        {"大碗油泼面", "大碗油泼", 9},
        {"小碗油泼面", "小碗油泼", 8},
        {"大碗拉条子面", "大碗拉条子", 9},
        {"小碗拉条子面", "小碗拉条子", 8},
        {"大碗棍棍面", "大碗棍棍", 9},
        {"小碗棍棍面", "小碗棍棍", 8}};

//米饭菜单
order rice[7] =
    {
        {"两荤两素", "两荤两素", 8},
        {"一荤三素", "一荤三素", 8},
        {"一荤两素", "一荤两素", 7},
        {"三样素菜", "三样素菜", 6},
        {"小炒肉盖浇饭", "小炒肉", 11},
        {"茄子盖浇饭", "茄子", 9},
        {"番茄鸡蛋盖浇饭", "番茄鸡蛋", 9}};

//特色小吃菜单
order spes[4] =
    {
        {"一份油条", "油条", 4},
        {"陕西凉皮", "凉皮", 6},
        {"豆腐脑", "豆腐脑", 2},
        {"葫芦头泡馍", "葫芦头", 13}};

//定义菜单函数
void display_menu()
{
    cout << "-----------------------------------------" << endl;
    cout << "|                餐厅菜单表              |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               a.热卖推荐               |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               b.饺子                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               c.面条                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               d.米饭                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               e.特色小吃               |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               q.退出并统计             |" << endl;
    cout << "-----------------------------------------" << endl;
}

//定义菜名函数
void display_name()
{
    cout << "a.热卖推荐菜单如下: " << endl;
    for (int i = 0; i < 5; i++)
        cout << "菜名: " << hsr[i].fullname << ","
             << "简称: " << hsr[i].abbreviation << ","
             << "单价: " << hsr[i].price << endl;

    cout << "b.饺子: " << endl;
    for (int i = 0; i < 8; i++)
        cout << "菜名: " << dump[i].fullname << ","
             << "简称: " << dump[i].abbreviation << ","
             << "单价: " << dump[i].price << endl;

    cout << "c.面条: " << endl;
    for (int i = 0; i < 10; i++)
        cout << "菜名: " << noodle[i].fullname << ","
             << "简称: " << noodle[i].abbreviation << ","
             << "单价: " << noodle[i].price << endl;

    cout << "d.米饭: " << endl;
    for (int i = 0; i < 7; i++)
        cout << "菜名: " << rice[i].fullname << ","
             << "简称: " << rice[i].abbreviation << ","
             << "单价: " << rice[i].price << endl;

    cout << "e.特色小吃: " << endl;
    for (int i = 0; i < 4; i++)
        cout << "菜名: " << spes[i].fullname << ","
             << "简称: " << spes[i].abbreviation << ","
             << "单价: " << spes[i].price << endl;
}

//定义个人口味函数
void display_preference()
{
    cout << "--------------------------------------" << endl;
    cout << "|    1.三鲜, 2.甜, 3.微微辣, 4.微辣    |" << endl;
    cout << "|    5.麻辣, 6.中辣, 7.超辣, 8.番茄    |" << endl;
    cout << "--------------------------------------" << endl;
}

//统计男女生人数函数
/* void display_sex()
{
    for (int i = 0; i < NUM; i++)
        cout << people[i].fullname << " 's sex is: " << people[i].sex << endl;
} */

int main()
{
    //1.初始化，设定账号和密码。
    long int ID = 20220106;
    int num = 6; //输入密码机会
    //2.建立存储信息的变量。
    long int id;
    //3.完成do-while循环结构中输入的内容
    cout << "请输入账号: ";
    cin >> id;
    int i = 0;
    //初始化一个空字符串,s是密码字符串
    string pwd = "", s = "666666";
    cout << "请输入密码: ";
    char c;
    while (true)
    {
        c = getch();
        if (c != 13) //如果不是回车，就不断往string类型的pwd内添加c
        {
            pwd = pwd + c;
            cout << "*";
        }
        else
        {
            if (pwd == s && id == ID)
            {
                cout << endl;
                cout << "                 登陆成功                " << endl;
                cout << "-----------------------------------------" << endl;
                char ch;       //菜种类选择序号
                int nn;        //口味选择序号
                double p0[5];  //a类菜的价钱
                double p1[8];  //b类菜的价钱
                double p2[10]; //c类菜的价钱
                double p3[7];  //d类菜的价钱
                double p4[3];  //e类菜的价钱
                long int total[34] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                                      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //各菜初始点餐数量
                cout << "|      欢迎光临食堂就餐，菜单如下:       |" << endl;
                display_menu();
                cout << endl;
                display_name();
                cout << endl;
                display_preference();
                cout << "_________________________________" << endl;
                cout << "_________________________________" << endl;
                cout << "请用字母输入您想吃哪个种类的菜品: " << endl;
                while (cin >> ch && ch != 'q' && ch != 'Q')
                {
                    cout << "输入菜名简称" << endl;
                    string na;  //菜名简称
                    switch (ch) //case分支大括号可以不要，这里为了方便观看加上了
                    {
                    case 'a':
                    case 'A':
                    {
                        cin >> na;
                        if (na == "香锅")
                            total[0]++;
                        else if (na == "夹馍")
                            total[1]++;
                        else if (na == "泡馍")
                            total[2]++;
                        else if (na == "烩菜")
                            total[3]++;
                        else if (na == "煮泡面")
                            total[4]++;
                    }
                    break;

                    case 'b':
                    case 'B':
                    {
                        cin >> na;
                        if (na == "大份莲菜")
                            total[5]++;
                        else if (na == "小份莲菜")
                            total[6]++;
                        else if (na == "大份韭菜")
                            total[7]++;
                        else if (na == "小份韭菜")
                            total[8]++;
                        else if (na == "大份牛肉")
                            total[9]++;
                        else if (na == "小份牛肉")
                            total[10]++;
                        else if (na == "大份羊肉")
                            total[11]++;
                        else if (na == "小份羊肉")
                            total[12]++;
                    }
                    break;

                    case 'c':
                    case 'C':
                    {
                        cin >> na;
                        if (na == "大碗三合一")
                            total[13]++;
                        else if (na == "小碗三合一")
                            total[14]++;
                        else if (na == "大碗二合一")
                            total[15]++;
                        else if (na == "小碗二合一")
                            total[16]++;
                        else if (na == "大碗油泼")
                            total[17]++;
                        else if (na == "小碗油泼")
                            total[18]++;
                        else if (na == "大碗拉条子")
                            total[19]++;
                        else if (na == "小碗拉条子")
                            total[20]++;
                        else if (na == "大碗棍棍")
                            total[21]++;
                        else if (na == "小碗棍棍")
                            total[22]++;
                    }
                    break;

                    case 'd':
                    case 'D':
                    {
                        cin >> na;
                        if (na == "两荤两素")
                            total[23]++;
                        else if (na == "一荤三素")
                            total[24]++;
                        else if (na == "一荤两素")
                            total[25]++;
                        else if (na == "三样素菜")
                            total[26]++;
                        else if (na == "小炒肉")
                            total[27]++;
                        else if (na == "茄子")
                            total[28]++;
                        else if (na == "番茄鸡蛋")
                            total[29]++;
                    }
                    break;

                    case 'e':
                    case 'E':
                    {
                        cin >> na;
                        if (na == "油条")
                            total[30]++;
                        else if (na == "凉皮")
                            total[31]++;
                        else if (na == "豆腐脑")
                            total[32]++;
                        else if (na == "葫芦头")
                            total[33]++;
                    }
                    break;
                    }

                    cout << "输入口味选项:" << endl;
                    cin >> nn;
                    while (nn != 0)
                    {
                        switch (nn)
                        {
                        case 1:
                            cout << flavor[0] << endl;
                            break;
                        case 2:
                            cout << flavor[1] << endl;
                            break;
                        case 3:
                            cout << flavor[2] << endl;
                            break;
                        case 4:
                            cout << flavor[3] << endl;
                            break;
                        case 5:
                            cout << flavor[4] << endl;
                            break;
                        case 6:
                            cout << flavor[5] << endl;
                            break;
                        case 7:
                            cout << flavor[6] << endl;
                            break;
                        case 8:
                            cout << flavor[7] << endl;
                            break;
                        default:
                            cout << "选择错误" << endl;
                        }
                        break;
                    }
                    cout << "请继续用字母输入您想吃哪个种类的菜品: " << endl;
                }

                for (int i = 0; i < 5; i++)
                {
                    p0[i] = total[i] * hsr[i].price;
                    cout << "a类各菜品点餐数如下: " << endl;
                    cout << hsr[i].fullname << " " << total[i] << " 份" << endl;
                    cout << "a类各菜品销售额如下: " << endl;
                    p0[i] = total[i] * hsr[i].price;
                    cout << hsr[i].fullname << " " << p0[i] << " 元" << endl;
                }

                for (int i = 0; i < 8; i++)
                {
                    cout << "b类各菜品点餐数如下: " << endl;
                    cout << dump[i].fullname << " " << total[i + 5] << " 份" << endl;
                    cout << "b类各菜品销售额如下: " << endl;
                    p1[i] = total[i + 5] * dump[i].price;
                    cout << dump[i].fullname << " " << p1[i] << " 元" << endl;
                }

                for (int i = 0; i < 10; i++)
                {
                    cout << "c类各菜品点餐数如下: " << endl;
                    cout << noodle[i].fullname << " " << total[i + 13] << " 份" << endl;
                    cout << "c类各菜品销售额如下: " << endl;
                    p2[i] = total[i + 13] * noodle[i].price;
                    cout << noodle[i].fullname << " " << p2[i] << " 元" << endl;
                }

                for (int i = 0; i < 7; i++)
                {
                    cout << "d类各菜品点餐数如下: " << endl;
                    cout << rice[i].fullname << " " << total[i + 23] << " 份" << endl;
                    cout << "d类各菜品销售额如下: " << endl;
                    p3[i] = total[i + 23] * rice[i].price;
                    cout << rice[i].fullname << " " << p3[i] << " 元" << endl;
                }

                for (int i = 0; i < 3; i++)
                {
                    cout << "e类各菜品点餐数如下: " << endl;
                    cout << spes[i].fullname << " " << total[i + 30] << " 份" << endl;
                    cout << "e类各菜品销售额如下: " << endl;
                    p4[i] = total[i + 30] * spes[i].price;
                    cout << spes[i].fullname << " " << p4[i] << " 元" << endl;
                }
                break;
            }
            else
            {
                if (num == 1)
                {
                    cout << "今日次数已用完!";
                    break;
                }
                else
                {
                    cout << endl;
                    cout << "账户或密码错误，还剩余" << --num << "次机会" << endl;
                    cout << "请输入账号: ";
                    cin >> id;
                    cout << "请输入密码: ";
                    pwd = "";
                }
            }
        }
    }
    void free();
    system("pause");
    return 0;
}

代码二：（输出数据到文件上）?

//ordersystem
//author:babysen
//date:2022/01/05-07

#include <iostream>
#include <string>
#include <fstream>
#include <conio.h>

using namespace std;

const int strsize = 30;
const string flavor[8] = {"三鲜", "甜", "微微辣", "微辣", "麻辣", "中辣", "超辣", "番茄"}; //口味

//构造显示函数：
void display_menu();        //显示菜单
void display_name();        //菜名
void display_preference();  //显示咸淡口味

//void display_sex();        //统计男女生人数
//构建结构体,其中s是性别的另一种表达，s=0,1;0为女性，1为男性

struct order
{
    char fullname[strsize];     //菜全名
    char abbreviation[strsize]; //菜简称
    int price;                  //价格
};

//输入结构体数组的内容

//热卖推荐菜单
order hsr[5] =
    {
        {"香锅", "香锅", 15},
        {"肉夹馍", "夹馍", 7},
        {"羊肉泡馍", "泡馍", 24},
        {"洛阳烩菜", "烩菜", 7},
        {"泡面加蛋", "煮泡面", 6}};

//饺子菜单
order dump[8] =
    {
        {"大份大肉莲菜", "大份莲菜", 10},
        {"小份大肉莲菜", "小份莲菜", 8},
        {"大份韭菜鸡蛋", "大份韭菜", 10},
        {"小份韭菜鸡蛋", "小份韭菜", 8},
        {"大份大葱牛肉", "大份牛肉", 12},
        {"小份大葱牛肉", "小份牛肉", 10},
        {"大份大葱羊肉", "大份羊肉", 12},
        {"小份大葱羊肉", "小份羊肉", 10}};

//面食菜单
order noodle[10] =
    {
        {"大碗三合一面", "大碗三合一", 11},
        {"小碗三合一面", "小碗三合一", 10},
        {"大碗二合一面", "大碗二合一", 10},
        {"小碗二合一面", "小碗二合一", 9},
        {"大碗油泼面", "大碗油泼", 9},
        {"小碗油泼面", "小碗油泼", 8},
        {"大碗拉条子面", "大碗拉条子", 9},
        {"小碗拉条子面", "小碗拉条子", 8},
        {"大碗棍棍面", "大碗棍棍", 9},
        {"小碗棍棍面", "小碗棍棍", 8}};

//米饭菜单
order rice[7] =
    {
        {"两荤两素", "两荤两素", 8},
        {"一荤三素", "一荤三素", 8},
        {"一荤两素", "一荤两素", 7},
        {"三样素菜", "三样素菜", 6},
        {"小炒肉盖浇饭", "小炒肉", 11},
        {"茄子盖浇饭", "茄子", 9},
        {"番茄鸡蛋盖浇饭", "番茄鸡蛋", 9}};

//特色小吃菜单
order spes[4] =
    {
        {"一份油条", "油条", 4},
        {"陕西凉皮", "凉皮", 6},
        {"豆腐脑", "豆腐脑", 2},
        {"葫芦头泡馍", "葫芦头", 13}};

//定义菜单函数
void display_menu()
{
    cout << "-----------------------------------------" << endl;
    cout << "|               餐厅菜单表               |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               a.热卖推荐               |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               b.饺子                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               c.面条                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               d.米饭                   |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               e.特色小吃               |" << endl;
    cout << "-----------------------------------------" << endl;
    cout << "|               q.退出并统计             |" << endl;
    cout << "-----------------------------------------" << endl;
}

//定义菜名函数
void display_name()
{
    cout << "a.热卖推荐菜单如下: " << endl;
    for (int i = 0; i < 5; i++)
        cout << "菜名: " << hsr[i].fullname << ","
             << "简称: " << hsr[i].abbreviation << ","
             << "单价: " << hsr[i].price << endl;

    cout << "b.饺子: " << endl;
    for (int i = 0; i < 8; i++)
        cout << "菜名: " << dump[i].fullname << ","
             << "简称: " << dump[i].abbreviation << ","
             << "单价: " << dump[i].price << endl;

    cout << "c.面条: " << endl;
    for (int i = 0; i < 10; i++)
        cout << "菜名: " << noodle[i].fullname << ","
             << "简称: " << noodle[i].abbreviation << ","
             << "单价: " << noodle[i].price << endl;

    cout << "d.米饭: " << endl;
    for (int i = 0; i < 7; i++)
        cout << "菜名: " << rice[i].fullname << ","
             << "简称: " << rice[i].abbreviation << ","
             << "单价: " << rice[i].price << endl;

    cout << "e.特色小吃: " << endl;
    for (int i = 0; i < 4; i++)
        cout << "菜名: " << spes[i].fullname << ","
             << "简称: " << spes[i].abbreviation << ","
             << "单价: " << spes[i].price << endl;
}

//定义个人口味函数
void display_preference()
{
    cout << "--------------------------------------" << endl;
    cout << "|    1.三鲜, 2.甜, 3.微微辣, 4.微辣    |" << endl;
    cout << "|    5.麻辣, 6.中辣, 7.超辣, 8.番茄    |" << endl;
    cout << "--------------------------------------" << endl;
}

//统计男女生人数函数
/* void display_sex()
{
    for (int i = 0; i < NUM; i++)
        cout << people[i].fullname << " 's sex is: " << people[i].sex << endl;
} */

//主函数
int main()
{
    //数据写入文件
    ofstream outfile("statis.txt", ios::out); //输出结果存储在statis文件中
    if (!outfile)
    {
        cerr << "open error!" << endl;
        exit(1);
    }
    //1.初始化，设定账号和密码。
    long int ID = 20220106;
    int num = 6; //输入密码次数
    //2.建立存储信息的变量。
    long int id;
    //3.完成do-while循环结构中输入的内容
    cout << "请输入账号: ";
    cin >> id;
    int i = 0;
    //初始化一个空字符串,s是密码字符串
    string pwd = "", s = "666666";
    cout << "请输入密码: ";
    char c;
    while (true)
    {
        c = getch();
        if (c != 13) //如果不是回车，就不断往string类型的pwd内添加c
        {
            pwd = pwd + c;
            cout << "*";
        }
        else
        {
            if (pwd == s && id == ID)
            {
                cout << endl;
                cout << "                 登陆成功                " << endl;
                cout << "-----------------------------------------" << endl;
                char ch;       //菜种类选择序号
                int nn;        //口味选择序号
                double p0[5];  //a类菜的价钱
                double p1[8];  //b类菜的价钱
                double p2[10]; //c类菜的价钱
                double p3[7];  //d类菜的价钱
                double p4[3];  //e类菜的价钱
                long int total[34] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                                      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //各菜初始点餐数量
                cout << "欢迎光临学校食堂就餐，菜单如下: " << endl;
                display_menu();
                cout << endl;
                display_name();
                cout << endl;
                display_preference();
                cout << "_________________________________" << endl;
                cout << "_________________________________" << endl;
                cout << "请用字母输入您想吃哪个种类的菜品: " << endl;
                while (cin >> ch && ch != 'q' && ch != 'Q')
                {
                    cout << "输入菜名简称" << endl;
                    string na;  //菜名简称
                    switch (ch) //case分支大括号可以不要，这里为了方便观看加上了
                    {
                    case 'a':
                    case 'A':
                    {
                        cin >> na;
                        if (na == "香锅")
                            total[0]++;
                        else if (na == "夹馍")
                            total[1]++;
                        else if (na == "泡馍")
                            total[2]++;
                        else if (na == "烩菜")
                            total[3]++;
                        else if (na == "煮泡面")
                            total[4]++;
                    }
                    break;

                    case 'b':
                    case 'B':
                    {
                        cin >> na;
                        if (na == "大份莲菜")
                            total[5]++;
                        else if (na == "小份莲菜")
                            total[6]++;
                        else if (na == "大份韭菜")
                            total[7]++;
                        else if (na == "小份韭菜")
                            total[8]++;
                        else if (na == "大份牛肉")
                            total[9]++;
                        else if (na == "小份牛肉")
                            total[10]++;
                        else if (na == "大份羊肉")
                            total[11]++;
                        else if (na == "小份羊肉")
                            total[12]++;
                    }
                    break;

                    case 'c':
                    case 'C':
                    {
                        cin >> na;
                        if (na == "大碗三合一")
                            total[13]++;
                        else if (na == "小碗三合一")
                            total[14]++;
                        else if (na == "大碗二合一")
                            total[15]++;
                        else if (na == "小碗二合一")
                            total[16]++;
                        else if (na == "大碗油泼")
                            total[17]++;
                        else if (na == "小碗油泼")
                            total[18]++;
                        else if (na == "大碗拉条子")
                            total[19]++;
                        else if (na == "小碗拉条子")
                            total[20]++;
                        else if (na == "大碗棍棍")
                            total[21]++;
                        else if (na == "小碗棍棍")
                            total[22]++;
                    }
                    break;

                    case 'd':
                    case 'D':
                    {
                        cin >> na;
                        if (na == "两荤两素")
                            total[23]++;
                        else if (na == "一荤三素")
                            total[24]++;
                        else if (na == "一荤两素")
                            total[25]++;
                        else if (na == "三样素菜")
                            total[26]++;
                        else if (na == "小炒肉")
                            total[27]++;
                        else if (na == "茄子")
                            total[28]++;
                        else if (na == "番茄鸡蛋")
                            total[29]++;
                    }
                    break;

                    case 'e':
                    case 'E':
                    {
                        cin >> na;
                        if (na == "油条")
                            total[30]++;
                        else if (na == "凉皮")
                            total[31]++;
                        else if (na == "豆腐脑")
                            total[32]++;
                        else if (na == "葫芦头")
                            total[33]++;
                    }
                    break;
                    }

                    cout << "输入口味选项:" << endl;
                    cin >> nn;
                    while (nn != 0)
                    {
                        switch (nn)
                        {
                        case 1:
                            cout << flavor[0] << endl;
                            break;
                        case 2:
                            cout << flavor[1] << endl;
                            break;
                        case 3:
                            cout << flavor[2] << endl;
                            break;
                        case 4:
                            cout << flavor[3] << endl;
                            break;
                        case 5:
                            cout << flavor[4] << endl;
                            break;
                        case 6:
                            cout << flavor[5] << endl;
                            break;
                        case 7:
                            cout << flavor[6] << endl;
                            break;
                        case 8:
                            cout << flavor[7] << endl;
                            break;
                        default:
                            cout << "选择错误" << endl;
                        }
                        break;
                    }
                    cout << "请继续用字母输入您想吃哪个种类的菜品: " << endl;
                }

                for (int i = 0; i < 5; i++)
                {
                    p0[i] = total[i] * hsr[i].price;
                    outfile << "a类各菜品点餐数如下: " << endl;
                    outfile << hsr[i].fullname << " " << total[i] << " 份" << endl;
                    outfile << "a类各菜品销售额如下: " << endl;
                    p0[i] = total[i] * hsr[i].price;
                    outfile << hsr[i].fullname << " " << p0[i] << " 元" << endl;
                }

                for (int i = 0; i < 8; i++)
                {
                    outfile << "b类各菜品点餐数如下: " << endl;
                    outfile << dump[i].fullname << " " << total[i + 5] << " 份" << endl;
                    outfile << "b类各菜品销售额如下: " << endl;
                    p1[i] = total[i + 5] * dump[i].price;
                    outfile << dump[i].fullname << " " << p1[i] << " 元" << endl;
                }

                for (int i = 0; i < 10; i++)
                {
                    outfile << "c类各菜品点餐数如下: " << endl;
                    outfile << noodle[i].fullname << " " << total[i + 13] << " 份" << endl;
                    outfile << "c类各菜品销售额如下: " << endl;
                    p2[i] = total[i + 13] * noodle[i].price;
                    outfile << noodle[i].fullname << " " << p2[i] << " 元" << endl;
                }

                for (int i = 0; i < 7; i++)
                {
                    outfile << "d类各菜品点餐数如下: " << endl;
                    outfile << rice[i].fullname << " " << total[i + 23] << " 份" << endl;
                    outfile << "d类各菜品销售额如下: " << endl;
                    p3[i] = total[i + 23] * rice[i].price;
                    outfile << rice[i].fullname << " " << p3[i] << " 元" << endl;
                }

                for (int i = 0; i < 3; i++)
                {
                    outfile << "e类各菜品点餐数如下: " << endl;
                    outfile << spes[i].fullname << " " << total[i + 30] << " 份" << endl;
                    outfile << "e类各菜品销售额如下: " << endl;
                    p4[i] = total[i + 30] * spes[i].price;
                    outfile << spes[i].fullname << " " << p4[i] << " 元" << endl;
                }
                break;
            }
            else
            {
                if (num == 1)
                {
                    cout << "今日次数已用完!";
                    break;
                }
                else
                {
                    cout << endl;
                    cout << "账户或密码错误，还剩余" << --num << "次机会" << endl;
                    cout << "请输入账号: ";
                    cin >> id;
                    cout << "请输入密码: ";
                    pwd = "";
                }
            }
        }
    }
    outfile.close();
	cout<<"处理完毕，请打开文件查看结果!"<<endl;

    void free();
    system("pause");
    return 0;
}

?结果显示如下：

?

??

陈述在该系统所存在的问题：

  1. 用户登录界面不支持注册以及修改密码
  2. 暂时只能单用户在一台机器上使用(技术盲点)
  3. 没有写出现输入错误的结果，就是很傻瓜式的系统（大家有兴趣可以加入条件进行修改）
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