基于C++的餐饮预订系统-创新互联

前言
一、系统介绍
二、系统设计

一、系统介绍

一个餐饮预订系统。程序运行后，首先选择用户类型，然后从文本文件读入菜单信息

进行初始化，根据用户类型不同在控制台界面上提供不同功能选择。用户选择某项功能

后，根据提示进行操作；操作完成后，能返回功能选择菜单重新选择，直至用户退出。

客户功能：

1) 预订——打印出可选菜单，提示用户选择；在用户选择后，提示用户输入个人

信息，记录下信息，并保存至本地文件。

2) 查询/退订——显示所有的已订的订单列表，提示输入退订订单；用户输入后，

如果卖家尚未确认订单，则成功退订并修改本地文件；否则提示退订失败。

卖家功能：

1) 添加/删除菜单——菜单根据文件初始化后，卖家可以对其进行修改，包括添加

和删除菜式等，修改后将新菜单保存至文件，下次初始化仍可用。

2) 查询/修改订单——读取本地文件，显示所有的订单及其状态，提示确认订单或

不进行操作；卖家选择订单后，修改该订单为确认状态。

二．设计过程与讨论

1.设计思路

作为一个自助订餐系统，除了实现基本功能，还要能提供友好的用户界面，有良好的提示语句，做到不错的用户体验，并处理大部分的用户错误输入。

菜单：包含编号，菜名，价格。

订单：包含菜单，用户姓名，用户电话，用户地址，数量，订单日期，订单状态。

首先考虑买家功能。买家的类里存着姓名，地址，电话，点餐数量，订餐日期，以及所有该用户的订单。

预订：如果没有可选菜单，输出提示语句。否则，输出所有菜单。提示用户输入选择。若输入的菜单信息无效，则提示找不到菜单，请用户重新输入。若有效，测提示用户继续输入，或者用户选择下单结束。点完所有菜时，将所有用户刚点的菜打印出来，提示用户输入个人信息，包括姓名，电话，地址，以及订单的日期。完毕后，将订单保存到本地文件。然后返回上一层。

查询：若用户之前输入过姓名，则直接输出所有已下订单。否则，提示用户输入姓名，并根据姓名在订单里查找，然后输出，返回上一层。

退订：若该用户没有任何订单，则输出提示并返回上一层。否则，输出所有该用户已下订单的具体情况，并提示用户输入想要取消的订单，若错误输入，提示用户继续输入。否则判断该订单是否已确认，已确认则提示用户订单不可修改，否则输出提示语句，取消订单。然后将新的订单写入本地文件。

然后考虑卖家功能。

进入卖家菜单，需要输入密码。密码保存在本地文件，默认为888888。当用户输入正确密码，才可以进入系统。输入错误5次会自动退出。进入后，有5个功能供选择。

添加菜单。提示用户输入菜式编号，菜名，价格，可以继续添加，然后选择退出。程序加添加后的菜单保存至本地文件。

删除菜单。打印出所有菜单，提示用户输入编号，输入错误则提示无此菜式。否则提示菜式已删除。然后用户可以选择继续删除或返回上一层。

查询订单。若无订单，则提示没有订单。否则，输出所有订单的详细信息。

修改订单。若没有未确认的订单，则提示所有订单已确认。否则输出所有未确认的订单，并为每一个订单规定一个编号。用户可以选择一键确认或者逐一确认。一键确认则程序修改所有订单状态并保存至本地文件。逐一确认则由用户输入编号确认，最后在用户放回上一层的时候保存至本地文件。

修改密码。先由用户输入旧密码，正确之后提示输入新密码。新密码需输入两次，若两次都一样，则修改密码并保存至本地文件。

用户进入阶段。如果是点餐者，可以选择1；如果是卖家，可以选择2。

二、系统设计

1.1主函数头文件

#include#include#include#include#include#include "Menu.h"
#include "User.h"

//以上均为定义头文件

#pragma warning(disable : 4267)//VS2022版本，会出现C4267报错，防止其报错

using namespace std;
fstream finout;//文件读和写字节流

vectororder;//声明了一个Order数组order[]
vectormenu;

void seviceForSeller();//卖家函数
void seviceForBuyer();//买家函数

以下为主函数

int main()
{
	string n;//定义一个字符串n，并初始化为空
	bool success = 0;
	cout<< setw(55)<< "Welcome to the MyBooking system!"<< endl;//setw(55)为预留55空间
	cout<< "          ----------------------------------------------------------"<< endl;
	//1为买家，2为卖家，3为退出系统 
	cout<< right;//右对齐，默认为右对齐
	cout<< endl<< setw(25)<< "1.Buyer"<< setw(15)<< "2.Seller"<< setw(15)<< "3.Exit"<< endl;
	while (cin >>n)
	{
		order.clear();//什么访问什么来着？
		menu.clear();
		if (n == "3") break;
		//处理错误输入 
		if (n != "1" && n != "2")
		{
			cout<< endl<< "Invalid number!Please input again :"<< endl;
			cout<< endl<< setw(25)<< "1.Buyer"<< setw(15)<< "2.Seller"<< setw(15)<< "3.Exit"<< endl;
			continue;
		}
		if (n == "1") seviceForBuyer();
		else seviceForSeller();
		cout<< right;
		cout<< endl<< setw(25)<< "1.Buyer"<< setw(15)<< "2.Seller"<< setw(15)<< "3.Exit"<< endl;
	}
	return 0;
}

用于读取文件中的菜单和订单，需要用户提前输入好，储存在txt文本文档里

//用于读取文件中的菜单 
Menu inputMenu()
{
	Menu iMenu;
	string dishID, dishName;
	double price = -1;
	finout >>dishID;
	if (dishID == " " || dishID == "\n") {
		iMenu.setDishID("-1");
		return iMenu;
	}
	finout >>dishName >>price;
	if (price< 0 || price >100000) {
		iMenu.setDishID("-1");
		return iMenu;
	}
	iMenu.setDishID(dishID);
	iMenu.setDishName(dishName);
	iMenu.setPrice(price);
	return iMenu;
}

//用于读取文件中的订单 
Order inputOrder()
{
	string dishID, dishName, name, adress, phone;
	double price = -1;
	int year, month, day, hour, modify, num;
	finout >>dishID;
	if (dishID == " " || dishID == "\n")
	{
		Order iOrder;
		iOrder.setDishID("-1");
		return iOrder;
	}
	finout >>dishName >>price >>num >>name >>adress >>phone;
	if (price< 0 || price >100000) {
		Order iOrder;
		iOrder.setDishID("-1");
		return iOrder;
	}
	finout >>year >>month >>day >>hour >>modify;
	Date date(year, month, day, hour);
	Order iOrder(dishName, dishID, price, name, adress, phone, date);
	iOrder.setnum(num);
	if (!modify) iOrder.setModify();
	return iOrder;
}

卖家函数

//卖家 
void seviceForSeller()
{
	Seller iSeller;
	Order iOrder;
	Menu iMenu;
	//验证密码 
	string password;
	finout.open("password.txt", ios::in);
	if (finout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		return;
	}
	finout >>password;
	finout.close();
	iSeller.setPassword(password);
	cout<< endl<< "Please input your password ( default is 888888 ) :";
	string str;
	int num = 5;
	cin >>str;
	while (num-- && str != iSeller.getPassword())
	{
		cout<< endl<< "The password is wrong!\nPlease input again : ";
		cin >>str;
	}
	if (num<= 0)
	{
		cout<< endl<< "You have input wrong password five times!"<< endl;
		return;
	}
	//1为增加菜单，2为删除菜单，3为查询订单，4为确认订单，5为设置密码，6返回主菜单 
	cout<< endl<< "Please choose the function you want :"<< endl;
	cout<< left;
	cout<< endl<< "           "<< setw(30)<< "1. Append menu"<< setw(20)<< "2. Cancel menu"<< endl;
	cout<< "           "<< setw(30)<< "3. Inquire"<< setw(20)<< "4.Modify"<< endl;
	cout<< "           "<< setw(30)<< "5.Set password"<< setw(20)<< "6.Main Menu"<< endl;
	string choice;
	while (cin >>choice)
	{
		if (choice == "6")
		{
			return;
		}
		//处理错误输入 
		if (choice != "1" && choice != "2" && choice != "3" && choice != "4" && choice != "5")
		{
			cout<< endl<< "Invalid input!Please input anain!"<< endl;
			cout<< endl<< "           "<< setw(30)<< "1. Append menu"<< setw(20)<< "2. Cancel menu"<< endl;
			cout<< "           "<< setw(30)<< "3. Inquire"<< setw(20)<< "4.Modify"<< endl;
			cout<< "           "<< setw(30)<< "5.Set password"<< setw(20)<< "6.Main Menu"<< endl;
			continue;
		}
		//从文件读取以初始化菜单信息和订单信息 
		order.clear();
		finout.open("order.txt", ios::in);
		if (finout.fail())
		{
			cout<< endl<< "The system can't find the file!"<< endl;
			break;
		}
		while (!finout.eof())
		{
			iOrder = inputOrder();
			if (iOrder.getDishID() == "-1") break;
			order.push_back(iOrder);
		}
		finout.close();
		menu.clear();
		finout.open("menu.txt", ios::in);
		if (finout.fail())
		{
			cout<< endl<< "The system can't find the file!"<< endl;
			break;
		}
		while (!finout.eof())
		{
			iMenu = inputMenu();
			if (iMenu.getDishID() == "-1") break;
			menu.push_back(iMenu);
		}
		finout.close();
		if (choice == "1")
			iSeller.appendMenu(menu);
		else if (choice == "2")
			iSeller.cancelMenu(menu);
		else if (choice == "3")
			iSeller.inquireOrder(order);
		else if (choice == "4")
			iSeller.modifyOrder(order);
		else
		{
			//修改密码 
			string str1, str2;
			cout<< right;
			cout<< endl<< setw(35)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
			while (cin >>str1)
			{
				if (str1 == "2") break;
				//处理错误输入 
				if (str1 != "1")
				{
					cout<< "Invalid input!"<< endl;
					cout<< endl<< setw(35)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
					continue;
				}
				cout<< "Please input your old password : ";
				cin >>str1;
				if (str1 == iSeller.getPassword()) break;
				else
				{
					cout<< right;
					cout<< endl<< "Wrong!"<< endl;
					cout<< endl<< setw(35)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
				}
			}
			if (str1 == "2")
			{
				cout<< left;
				cout<< endl<< "           "<< setw(30)<< "1. Append menu"<< setw(20)<< "2. Cancel menu"<< endl;
				cout<< "           "<< setw(30)<< "3. Inquire"<< setw(20)<< "4.Modify"<< endl;
				cout<< "           "<< setw(30)<< "5.Set password"<< setw(20)<< "6.Main Menu"<< endl;
				continue;
			}
			cout<< endl<< "Please input your new password : ";
			cin >>str1;
			cout<< endl<< "Please input again :";
			cin >>str2;
			//两次输入的新密码一样，则修改密码，写入文件 
			if (str1 == str2) {
				finout.open("password.txt", ios::out);
				if (finout.fail())
				{
					cout<< endl<< "The system can't find the file!"<< endl;
					return;
				}
				finout<< str1;
				finout.close();
				iSeller.setPassword(str1);
				cout<< endl<< "The new password have benn set!"<< endl;
			}
			else
			{
				cout<< endl<< "The new password you have input twice times is different !"<< endl;
			}
		}
		cout<< left;
		cout<< endl<< "           "<< setw(30)<< "1. Append menu"<< setw(20)<< "2. Cancel menu"<< endl;
		cout<< "           "<< setw(30)<< "3. Inquire"<< setw(20)<< "4.Modify"<< endl;
		cout<< "           "<< setw(30)<< "5.Set password"<< setw(20)<< "6.Main Menu"<< endl;
	}
	if (choice == "6")
	{
		return;
	}
}

买家函数

void seviceForBuyer()
{
	Buyer ibuyer;
	Menu iMenu;
	Order iOrder;
	string n;
	// 1为点菜，2为查询订单，3为修改订单 ，4返回主菜单 
	cout<< left;
	cout<< endl<< "Please continue to choose the function you want:"<< endl;
	cout<< endl<< "           "<< setw(20)<< "1. Order"<< setw(20)<< "2. Inquire"<< endl;
	cout<< "           "<< setw(20)<< "3. Cancel"<< setw(20)<< "4.Main Menu"<< endl;
	cin >>n;
	while (n != "4")
	{
		//处理错误输入 
		if (n != "1" && n != "2" && n != "3")
		{
			cout<< endl<< "Invalid input!Please input anain!"<< endl;
			cin >>n;
			continue;
		}
		//从文件读取以初始化菜单信息和订单信息 
		order.clear();
		finout.open("order.txt", ios::in);
		if (finout.fail())
		{
			cout<< endl<< "The system can't find the file!"<< endl;
			break;
		}
		while (!finout.eof())
		{
			iOrder = inputOrder();
			if (iOrder.getDishID() == "-1") break;
			order.push_back(iOrder);
		}
		finout.close();
		menu.clear();
		finout.open("menu.txt", ios::in);
		if (finout.fail())
		{
			cout<< endl<< "The system can't find the file!"<< endl;
			break;
		}
		while (!finout.eof())
		{
			iMenu = inputMenu();
			if (iMenu.getDishID() == "-1") break;
			menu.push_back(iMenu);
		}
		finout.close();
		if (n == "1")
			ibuyer.bookOrder(menu, order);
		else if (n == "2")
			ibuyer.inquireOrder(order);
		else if (n == "3")
			ibuyer.modifyOrder(order);
		cout<< left;
		cout<< endl<< "Please continue to choose the function you want:"<< endl;
		cout<< endl<< "           "<< setw(20)<< "1. Order"<< setw(20)<< "2. Inquire"<< endl;
		cout<< "           "<< setw(20)<< "3. Cancel"<< setw(20)<< "4.Main Menu"<< endl;
		cin >>n;
	}
	if (n == "4") return;
}

菜单头文件

#include#include#includeusing namespace std;

//定义日期类，存年月日及小时 
#ifndef DATE_H
#define DATE_H
class Date
{
private:
	int year, month, day, hour;
public:
	Date();
	Date(int y, int m, int d, int h);
	bool operator ==(Date date2);
	int getYear();
	int getMonth();
	int getDay();
	int getHour();
	void setYear(int);
	void setMonth(int);
	void setDay(int);
	void setHour(int);
};
#endif

#ifndef MENU_H
#define MENU_H
class Menu
{
protected:
	string dishName, dishID;
	double price;
public:
	Menu();
	Menu(string dishName, string dishID, double price);
	void setDishName(string);
	void setDishID(string);
	void setPrice(double);
	string getDishName();
	string getDishID();
	double getPrice();
};
#endif

//Order类存有用户名，地址，电话，数量，日期，确认状态 
#ifndef ORDER_H
#define ORDER_H
class Order :public Menu
{
private:
	string customerName, adress, phone;
	int num;
	Date bookDate;
	bool modify;
public:
	Order();
	Order(string dishName, string dishID, double price, string customerName, string adress, string phone, Date bookDate);
	Order(string dishName, string dishID, double price);
	Order(Menu, int);
	const bool operator==(Order order2);
	string getCustomerName();
	string getAdress();
	string getPhone();
	Date getBookDate();
	bool getModify();
	int getNum();
	bool setCustomerName(string customerName);
	bool setAdress(string adress);
	bool setPhone(string phone);
	bool setnum(int num);
	bool setBookDate(Date bookDate);
	void setModify();
};
#endif

菜单程序

#include#include#include#include#include "Menu.h"
using namespace std;

Date::Date(int y, int m, int d, int h)
{
	year = y;
	month = m;
	day = d;
	hour = h;
}

Date::Date()
{
	year = 2012;
	month = 12;
	day = 12;
	hour = 12;
}

bool Date::operator==(Date date2)
{
	if (date2.year == year && date2.month == month && date2.day == day && date2.hour == hour) return true;
	return false;
}

int Date::getYear()
{
	return year;
}

int Date::getMonth()
{
	return month;
}

int Date::getDay()
{
	return day;
}

int Date::getHour()
{
	return hour;
}

void Date::setYear(int y)
{
	year = y;
}

void Date::setMonth(int m)
{
	month = m;
}

void Date::setDay(int d)
{
	day = d;
}

void Date::setHour(int h)
{
	hour = h;
}

Menu::Menu()
{
}

Menu::Menu(string dishName, string dishID, double price)
{
	this->dishName = dishName;
	this->dishID = dishID;
	this->price = price;
}

void Menu::setDishName(string name)
{
	dishName = name;
}

void Menu::setDishID(string ID)
{
	dishID = ID;
}

void Menu::setPrice(double p)
{
	price = p;
}

string Menu::getDishName()
{
	return dishName;
}

string Menu::getDishID()
{
	return dishID;
}

double Menu::getPrice()
{
	return price;
}


Order::Order()
{
	modify = 1;
}

Order::Order(string dishName, string dishID, double price, string customerName, string adress, string phone, Date date) :Menu(dishName, dishID, price), bookDate(date)
{
	this->customerName = customerName;
	this->adress = adress;
	this->phone = phone;
	modify = 1;
}

Order::Order(string dishName, string dishID, double price) : Menu(dishName, dishID, price)
{
	modify = 1;
}

Order::Order(Menu m, int n) :Menu(m), num(n)
{
	modify = 1;
};

const bool Order::operator==(Order order2)
{
	if (order2.dishID != dishID) return false;
	if (order2.dishName != dishName) return false;
	if (order2.customerName != customerName) return false;
	if (order2.phone != phone) return false;
	if (order2.adress != adress) return false;
	if (!(order2.bookDate == bookDate)) return false;
	return true;
}

string Order::getCustomerName()
{
	return customerName;
}

string Order::getAdress()
{
	return adress;
}

string Order::getPhone() {
	return phone;
}

Date Order::getBookDate()
{
	return bookDate;
}

bool Order::getModify()
{
	return modify;
}

int Order::getNum()
{
	return num;
}

bool Order::setCustomerName(string customerName)
{
	if (!modify) return false;
	this->customerName = customerName;
	return true;
}

bool Order::setAdress(string adress)
{
	if (!modify) return false;
	this->adress = adress;
	return true;
}

bool Order::setPhone(string phone)
{
	if (!modify) return false;
	this->phone = phone;
	return true;
}

void Order::setModify()
{
	modify = 0;
}

bool Order::setBookDate(Date bookDate)
{
	if (!modify) return false;
	this->bookDate = bookDate;
	return true;
}

bool Order::setnum(int num)
{
	if (!modify) return false;
	this->num = num;
	return true;
}

用户预订订单流程图

用户查询订单流程图

用户修改订单流程图

卖家增加、删除订单流程图

卖家查询、确认订单流程图

用户头文件

#pragma once
#include"Menu.h"
#include#ifndef USER_H
#define USER_H
class User {
private:

public:
	virtual void modifyOrder(vector&) = 0;
	virtual void inquireOrder(vector&) = 0;
};
#endif

//卖家有密码成员变量 
#ifndef SELLER_H
#define SELLER_H
class Seller :public User {
private:
	string password;
public:
	Seller();
	void modifyOrder(vector&);
	void inquireOrder(vector&);
	void appendMenu(vector&);
	void cancelMenu(vector&);
	void setPassword(string);
	string getPassword();
};
#endif

//买家有名字、地址、电话、订单日期、自己的订单数量 和一个 vector类型的用于存储买家自己的所有订单 
#ifndef BUYER_H
#define BUYER_H
class Buyer :public User {
private:
	vectormyOrder;
	string name, adress, phone;
	Date bookDate;
	int num;
public:
	Buyer();
	void bookOrder(vector&, vector&);
	void modifyOrder(vector&);
	void inquireOrder(vector&);
	int getNum();
	string getName();
	void setNum(int);
};
#endif

用户程序

#include#include#include#include#include#include#include "Menu.h"
#include "User.h"
#pragma warning(disable : 4267)
using namespace std;
fstream inout;

//用于输出日期 
void printDate(Date date)
{
	cout<< left;
	cout<< date.getYear()<< '/'<< date.getMonth()<< '/'<< date.getDay()<< "-"<< date.getHour()<< 'h';
}

//用于输出菜单 
void printMenu(Menu m)
{
	cout<< left;
	cout<< setw(20)<< m.getDishID()<< setw(20)<< m.getDishName()<< setw(20)<< m.getPrice()<< endl;
}


//用于输出订单 
void printOrder(Order myOrder)
{
	cout<< left;
	cout<< setw(7)<< myOrder.getDishID()<< setw(10)<< myOrder.getDishName()<< setw(6)<< myOrder.getPrice()<< setw(4)<< myOrder.getNum();
	cout<< setw(8)<< myOrder.getCustomerName()<< setw(8)<< myOrder.getPhone()<< setw(12)<< myOrder.getAdress();
	cout<< " "; printDate(myOrder.getBookDate()); cout<< "  ";
	if (myOrder.getModify())
	{
		cout<< setw(10)<< "New"<< endl;
	}
	else cout<< setw(10)<< "Approved"<< endl;
}

//用于将菜单写入文件 
void outputMenu(Menu& iMenu)
{
	inout<< iMenu.getDishID()<< ' '<< iMenu.getDishName()<< ' '<< iMenu.getPrice()<< endl;
}

//用于将订单写入文件 
void outputOrder(Order& iOrder)
{
	Date date = iOrder.getBookDate();
	int modify = iOrder.getModify() ? 1 : 0;
	inout<< iOrder.getDishID()<< ' '<< iOrder.getDishName()<< ' '<< iOrder.getPrice()<< ' '<< iOrder.getNum()<< endl;
	inout<< iOrder.getCustomerName()<< ' '<< iOrder.getAdress()<< ' '<< iOrder.getPhone()<< endl;
	inout<< date.getYear()<< ' '<< date.getMonth()<< ' '<< date.getDay()<< ' '<< date.getHour()<< ' '<< modify<< endl;
}

Buyer::Buyer()
{
	name = "no";
	adress = "no";
	num = 0;
}

string Buyer::getName()
{
	return name;
}

//买家订菜 
void Buyer::bookOrder(vector& myMenu, vector& order)
{
	int n, m = 0, i, year, month, day, hour, appNum = 0;
	string str;
	char ch;
	n = myMenu.size();
	num = myOrder.size();
	bool can = 1;
	//判断菜单是否为空 
	if (!n)
	{
		cout<< endl<< "Sorry! There is no dish for you to choose!"<< endl;
		return;
	}
	cout<< left;
	cout<< endl<< "Here is the Menu :"<< endl;
	cout<< endl<< "        "<< setw(20)<< "DishID"<< setw(20)<< "DishName"<< setw(20)<< "Price"<< endl;
	for (i = 0; i< n; ++i)
	{
		cout<< "        ";
		printMenu(myMenu[i]);
	}
	//1为继续，2返回上一层 
	cout<< right;
	cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
	while (cin >>str)
	{
		can = 1;
		if (str == "2") break;
		cout<< "Please input the dish ID : ";
		cin >>str;
		for (i = 0; i< n; ++i)
		{
			if (myMenu[i].getDishID() == str)
			{
				myOrder.push_back(Order(myMenu[i], m));
				break;
			}
			//判断该编号是否存在 
			if (i == n - 1)
			{
				cout<< endl<< "There is no such dish!"<< endl;
				cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
				can = 0;
			}

		}
		if (!can) continue;
		appNum++;
		cout<< endl<< "Please input the count you want : ";
		cin >>m;
		myOrder[myOrder.size() - 1].setnum(m);
		cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
	}
	//判断有无新增菜单 
	if (appNum == 0)
	{
		cout<< endl<< "You haven't ordered anything!"<< endl;
		return;
	}
	//输出所有用户已预定的菜 
	cout<< left;
	cout<< endl<< "Here is the dish you have ordered:"<< endl;
	cout<< endl<< setw(20)<< "DishID"<< setw(20)<< "DishName"<< setw(20)<< "Price"<< endl;
	for (i = 0; i< myOrder.size(); ++i)
	{
		printMenu(myOrder[i]);
	}
	//判断此时买家是否为匿名状态，是则跳过输入姓名，地址，电话 
	if (name == "no" || adress == "no")
	{
		cout<< endl<< "Please input your name : ";
		cin >>name;
		cout<< endl<< "Please input your address : ";
		cin >>adress;
		cout<< endl<< "Please input your phone : ";
		cin >>phone;
	}
	cout<< endl<< "Please input the date you want to have you dish,"<< endl;
	cout<< "just as 2013/5/2 14 (year/month/day hour) : "<< endl;
	cin >>year >>ch >>month >>ch >>day >>hour;
	bookDate.setYear(year);
	bookDate.setMonth(month);
	bookDate.setDay(day);
	bookDate.setHour(hour);
	for (int i = num; i< myOrder.size(); ++i) {
		myOrder[i].setCustomerName(name);
		myOrder[i].setAdress(adress);
		myOrder[i].setPhone(phone);
		myOrder[i].setBookDate(bookDate);
	}
	inout.open("order.txt", ios::app);
	if (inout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		return;
	}
	for (i = num; i< myOrder.size(); ++i)
	{
		outputOrder(myOrder[i]);
	}
	inout.close();
	num = myOrder.size();
}

//买家查询订单 
void Buyer::inquireOrder(vector& order)
{
	//名字是否为空 
	if (name == "no") {
		cout<< endl<< "please input your name : ";
		cin >>name;
	}
	myOrder.clear();
	for (int i = 0; i< order.size(); ++i)
	{
		if (order[i].getCustomerName() == name)
		{
			myOrder.push_back(order[i]);
		}
	}
	num = myOrder.size();
	if (num == 0)
	{
		cout<< endl<< "You haven't ordered any dish!"<< endl;
		return;
	}
	cout<< left;
	cout<< endl<< "Here is the dishes you have ordered :"<< endl;
	cout<< endl<< setw(7)<< "DishID"<< setw(10)<< "DishName"<< setw(6)<< "price"<< setw(4)<< "num"<< setw(8)<< "Name";
	cout<< setw(8)<< "Phone"<< setw(12)<< "Address"<< setw(15)<< "Date"<< setw(10)<< "state"<< endl;
	for (int i = 0; i< num; ++i) {
		printOrder(myOrder[i]);
	}
	return;
}

//买家取消订单 
void Buyer::modifyOrder(vector& order)
{
	num = myOrder.size();
	if (num == 0)
	{
		cout<< endl<< "You haven't ordered any dish!"<< endl;
		return;
	}
	//输出买家自已的所有订单 
	cout<< left;
	cout<< endl<< "The dish you have ordered is :"<< endl;
	cout<< endl<< setw(7)<< "DishID"<< setw(10)<< "DishName"<< setw(6)<< "price"<< setw(4)<< "num"<< setw(8)<< "Name";
	cout<< setw(8)<< "Phone"<< setw(12)<< "Address"<< setw(15)<< "Date"<< setw(10)<< "state"<< endl;
	for (int i = 0; i< num; ++i)
	{
		printOrder(myOrder[i]);
	}
	//选择1-继续或2-返回上一层 
	cout<< right;
	cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
	string str;
	int pos = -1, n = 0;
	Order iOrder;
	int* cancleDish = new int[num + 1], * cancle = new int[order.size()];
	memset(cancleDish, 0, 4 * (num + 1));
	memset(cancle, 0, 4 * (order.size()));
	while (cin >>str)
	{
		if (str == "2") break;
		//判断无效输入 
		if (str != "1") {
			cout<< endl<< "Invalid input!"<< endl;
			cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
			continue;
		}
		cout<< endl<< "Please input the dishID : ";
		cin >>str;
		for (int i = 0; i< num; ++i)
		{
			if (myOrder[i].getDishID() == str)
			{
				//该订单是否已确认 
				if (myOrder[i].getModify()) {
					cout<< endl<< "The order have been canceled!"<< endl;
					pos = i;
					break;
				}
				else {
					cout<< endl<< "The order have been approved! You can't cancel it !"<< endl;
					pos = -2;
					break;
				}
			}
		}
		//查看该买家想取消的编号是否存在 
		if (pos< 0) {
			if (pos == -1)
				cout<< endl<< "There is no such dish you have ordered!"<< endl;
		}
		else {
			cancleDish[pos] = 1;
			n++;
		}
		pos = -1;
		cout<< right;
		cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
	}
	//将更新的订单写入文件 
	inout.open("order.txt", ios::out);
	if (inout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		delete cancleDish; delete cancle;
		return;
	}
	for (int i = 0; i< num; ++i)
	{
		if (cancleDish[i]) {
			for (int j = 0; j< order.size(); ++j)
			{
				if (order[j] == myOrder[i])
				{
					cancle[j] = 1;
					break;
				}
			}
		}
	}
	for (int i = 0; i< order.size(); ++i)
	{
		if (cancle[i]) {
			continue;
		}
		outputOrder(order[i]);
	}
	inout.close();
	num -= n;
	delete cancleDish; delete cancle;
}

int Buyer::getNum()
{
	return num;
}

Seller::Seller()
{
	password = "888888";
}

void Seller::appendMenu(vector& myMenu)
{
	cout<< endl<< "Do you want to append Menu?  Y/N"<< endl;
	string ch;
	int k = myMenu.size();
	while (cin >>ch)
	{
		//判断无效输入 
		if (ch != "Y" && ch != "y") break;
		cout<< endl<< "please input the dish name : ";
		string str;
		Menu iMenu;
		double d;
		cin >>str;
		iMenu.setDishName(str);
		cout<< endl<< "Please input the dish ID : ";
		cin >>str;
		iMenu.setDishID(str);
		cout<< endl<< "Please input the price of the dish : ";
		cin >>d;
		iMenu.setPrice(d);
		myMenu.push_back(iMenu);
		cout<< endl<< "The dish have been added to the menu!"<< endl;
		cout<< endl<< "Do you want to continue to append Menu? Y/N"<< endl;
	}
	//将新增菜单写入文件 
	inout.open("menu.txt", ios::app);
	if (inout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		return;
	}
	for (int i = k; i< myMenu.size(); ++i)
	{
		outputMenu(myMenu[i]);
	}
	inout.close();
	return;
}

void Seller::cancelMenu(vector& myMenu)
{
	cout<< endl<< "Do you want to cancel Menu? Y/N"<< endl;
	string str;
	string ch;
	Menu iMenu;
	vector::iterator it = myMenu.begin();
	while (cin >>ch)
	{
		it = myMenu.begin();
		if (ch == "N" || ch == "n") break;
		//判断无效输入 
		if (ch != "Y" && ch != "y")
		{
			cout<< endl<< "Invalid input!Please input again!"<< endl;
			cout<< endl<< "Do you want to cancel Menu? Y/N"<< endl;
			continue;
		}
		//输出所有菜单 
		cout<< left;
		cout<< endl<< "Here is the Menu :"<< endl;
		cout<< endl<< "        "<< setw(20)<< "DishID"<< setw(20)<< "DishName"<< setw(20)<< "Price"<< endl;
		for (int i = 0; i< myMenu.size(); ++i)
		{
			cout<< "        ";
			printMenu(myMenu[i]);
		}
		cout<< endl<< "Please input the dish ID you want cancel : ";
		cin >>str;
		for (int i = 0; i< myMenu.size(); ++i)
		{
			if (myMenu[i].getDishID() == str)
			{
				myMenu.erase(it + i);
				cout<< endl<< "The dish have been canceled!"<< endl;
				break;
			}
			//找不到该编号 
			if (i == myMenu.size() - 1)
			{
				cout<< endl<< "There is no such dish!Please input again!"<< endl;
			}
		}
		cout<< endl<< "Do you want to continue to cancel Menu? Y/N"<< endl;
	}
	//将修改后菜单写入文件 
	inout.open("menu.txt", ios::out);
	if (inout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		return;
	}
	for (int i = 0; i< myMenu.size(); ++i)
	{
		outputMenu(myMenu[i]);
	}
	inout.close();
}

//卖家查询订单 
void Seller::inquireOrder(vector& order)
{
	//没有订单则输出提示并返回上一层 
	if (order.size() == 0)
	{
		cout<< endl<< "There is no any order!"<< endl;
		return;
	}
	cout<< left;
	cout<< endl<< "Here is the order :"<< endl;
	cout<< endl<< setw(7)<< "DishID"<< setw(10)<< "DishName"<< setw(6)<< "price"<< setw(4)<< "num"<< setw(8)<< "Name";
	cout<< setw(8)<< "Phone"<< setw(12)<< "Address"<< setw(15)<< "Date"<< setw(10)<< "state"<< endl;
	for (int i = 0; i< order.size(); ++i)
	{
		printOrder(order[i]);
	}
	return;
}

//卖家确认订单 
void Seller::modifyOrder(vector& order)
{
	int* pos = new int[order.size() + 1], count = 0;
	memset(pos, 0, sizeof(pos));
	for (int i = 0; i< order.size(); ++i)
	{
		if (order[i].getModify())
		{
			count++;
			pos[i] = 1;
		}
	}
	//没有未确认订单则提示后返回上一层 
	if (count == 0)
	{
		cout<< endl<< "All order have been approved!"<< endl;
		return;
	}
	cout<< left;
	cout<< endl<< "Here is the order you haven't approve : "<< endl;
	cout<< endl<< setw(7)<< "DishID"<< setw(10)<< "DishName"<< setw(6)<< "price"<< setw(4)<< "num"<< setw(8)<< "Name";
	cout<< setw(8)<< "Phone"<< setw(12)<< "Address"<< setw(15)<< "Date"<< setw(10)<< "state"<< endl;
	count = 0;
	for (int i = 0; i< order.size(); ++i)
	{
		if (pos[i] && order[i].getModify())
		{
			count++;
			cout<< count<< endl;
			printOrder(order[i]);
		}
	}
	//卖家可选择 1-全部确认 或 2-逐个确认 或 3-返回 
	cout<< right;
	cout<< endl<< setw(20)<< "1.Aprove all"<< setw(25)<< "2.Aprove one by one"<< setw(20)<< "3.return"<< endl;
	string n;
	while (cin >>n)
	{
		if (n == "1" || n == "2" || n == "3") break;
		else {
			cout<< endl<< "Invalid input!"<< endl;
			cout<< endl<< setw(20)<< "1.Aprove all"<< setw(25)<< "2.Aprove one by one"<< setw(20)<< "3.return"<< endl;
		}
	}
	if (n == "3") return;
	if (n == "1")
	{
		for (int i = 0; i< order.size(); ++i)
		{
			if (pos[i])
				order[i].setModify();
		}
	}
	else
	{
		cout<< right;
		cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
		int k, m;
		while (cin >>m)
		{
			if (m == 2) return;
			if (m != 1) {
				cout<< endl<< "Invalid input!"<< endl;
				return;
			}
			cout<< endl<< "Please input the number of order:";
			cin >>m;
			//检验输入正确性 
			if (m >count)
			{
				cout<< endl<< "There is only "<< count<< " order!"<< endl;
				cout<< endl<< "Please input again!"<< endl;
			}
			else if (m<= 0)
			{
				cout<< endl<< "The number must be positive !"<< endl;
			}
			else
			{
				k = 0;
				for (int i = 0; i< order.size(); ++i)
				{
					if (pos[i])
					{
						k++;
						if (k == m)
						{
							order[i].setModify();
							cout<< endl<< "The order have approved!"<< endl;
						}
					}
				}
			}
			cout<< right;
			cout<< endl<< setw(30)<< "1.Continue"<< setw(20)<< "2.return"<< endl;
		}
	}
	//将修改后的订单写入文件 
	inout.open("order.txt", ios::out);
	if (inout.fail())
	{
		cout<< endl<< "The system can't find the file!"<< endl;
		return;
	}
	for (int i = 0; i< order.size(); ++i)
	{
		outputOrder(order[i]);
	}
	inout.close();

}

void Seller::setPassword(string p)
{
	password = p;
}

string Seller::getPassword()
{
	return password;
}

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