用面向对象模拟 顾客到餐厅就餐的过程. 顾客类 服务员 厨师

用c#编写

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication15
{
    class Program
    {
        static void Main(string[] args)
        {

            Customer xiaoZhang = new Customer("小张");
            Waiter waiter = new Waiter(xiaoZhang);
            Cook cook = new Cook(waiter);
            xiaoZhang.点菜("红烧大排");
            xiaoZhang.点菜("番茄炒蛋");
            xiaoZhang.点菜("鱼香肉丝");
            xiaoZhang.点完();

            Console.ReadKey();
        }

        public class Customer
        {
            public string Name { get; set; }
            private Waiter waiter;
            public Customer(string name)
            {
                this.Name = name;
                this.waiter = new Waiter(this);
            }

            public void 点菜(string dishName)
            {
                Console.WriteLine(this.Name + "点了：" + dishName);
                this.waiter.记录(dishName);
            }

            public void 点完()
            {
                Console.WriteLine(this.Name + "点完菜了");
                this.waiter.通知厨师();
            }

            public void 吃()
            {
                Console.WriteLine(this.Name + "开吃了！！！");
            }
        }

        public class Waiter
        {
            public List Dishes = new List();
            private Cook cook;
            public Customer Customer { get; set; }

            public Waiter(Customer customer)
            {
                this.Customer = customer;
                this.cook = new Cook(this);              
            }

            public void 记录(string dishName)
            {
                this.Dishes.Add(dishName);
                Console.WriteLine("服务员记下了" + this.Customer.Name + "点的：" + dishName);
            }

            public void 通知厨师()
            {
                Console.WriteLine("服务员通知厨师开始为" + this.Customer.Name + "做菜。");
                this.cook.做菜();
            }

            public void 上菜()
            {
                Console.WriteLine("服务员开始上菜");
                this.Customer.吃();
            }
        }

        public class Cook
        {
            private Waiter waiter;
            public Cook(Waiter waiter)
            {
                this.waiter = waiter;
            }

            public void 做菜()
            {
                foreach (string dish in waiter.Dishes)
                {
                    Console.WriteLine("厨师正在为" + this.waiter.Customer.Name + "做：" + dish);
                }

                this.做完了();
            }

            private void 做完了()
            {
                Console.WriteLine("厨师把" + this.waiter.Customer.Name + "的菜做好了。");
                this.waiter.上菜();
            }
        }
    }
} ---------------------------------------------------------------------
下面的是用命令模式+简单工厂做的：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 命令模式
{
    class Program
    {
        static void Main(string[] args)
        {
            Cook cook = new Cook();
            Custom xiaoZhang = new Custom("小张");
            Command 点炒菜 = xiaoZhang.点单("点炒菜");
            Command 点饭 = xiaoZhang.点单("点饭");

            Waiter waiter = new Waiter();
            waiter.SetOrder(点炒菜);
            waiter.SetOrder(点饭);
            waiter.Notify();

            Console.ReadKey();
        }
    }

    public class Cook
    {
        public void 炒菜()
        {
            Console.WriteLine("开始炒菜");
        }

        public void 做饭()
        {
            Console.WriteLine("开始做饭");
        }
    }

    public class Custom
    {
        public string Name { get; set; }
        public Custom(string name)
        {
            this.Name = name;
        }

        public Command 点单(string commandString)
        {
            return CommandFactory.CreateCommand(commandString);
        }
    }

    public class CommandFactory
    {
        public static Command CreateCommand(string commandString)
        {
            Cook cook = new Cook();

            if (commandString == "点炒菜")
            {
                return new 炒菜Command(cook);
            }
            else if (commandString == "点饭")
            {
                return new 做饭Command(cook);
            }
            else
            {
                throw new Exception("没这个菜");
            }
        }
    }

    public abstract class Command
    {
        protected Cook cook;

        public Command(Cook cook)
        {
            this.cook = cook;
        }

        public abstract void Execute();
    }

    public class 炒菜Command : Command
    {
        public 炒菜Command(Cook cook) : base(cook) { }

        public override void Execute()
        {
            this.cook.炒菜();
        }
    }

    public class 做饭Command : Command
    {
        public 做饭Command(Cook cook) : base(cook) { }

        public override void Execute()
        {
            this.cook.做饭();
        }
    }

    public class Waiter
    {
        private List commands = new List();
        public void SetOrder(Command command)
        {
            this.commands.Add(command);
        }

        public void Notify()
        {
            foreach (var command in this.commands)
            {
                command.Execute();
            }
        }
    }
}

同问。。。