设计模式03 简单的工厂设计模式 bylp

2019-04-13 17:22发布生成海报

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设计模式03 简单的工程设计模

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

namespace 设计模式02
{
    class Program
    {
        static void Main(string[] args)
        {
            //一个商场的收银系统 
            MainFunction lp_a = new MainFunction();
            Console.ReadLine();
        }
    }

    //现金收费抽象类
    abstract class CashSuper
    {
        public abstract double acceptCash(double money);
    }

    //正常的收费
    class CashNormaI : CashSuper
    {
        public override double acceptCash(double money)
        {
            return money ;
        }
    }

    //打折的收费
    class CashRebate : CashSuper
    {
        private double moneyRebate = 1d;                //打折的折扣率

        public CashRebate(string moneyRebate)           //构造函数
        {
            this.moneyRebate = double.Parse(moneyRebate) ;
        }

        public override double acceptCash(double money) //对收费进行打折
        {
            return money * moneyRebate;
        }
    }

    //满减的收费
    class CashReturn : CashSuper
    {
        private double lpMoneyCondtion = 0d;

        private double lpMoneyReturn = 0d;

        public CashReturn(string moneyCondtion , string moneyReturn)
        {
            this.lpMoneyCondtion = double.Parse(moneyCondtion);
            this.lpMoneyReturn = double.Parse(moneyReturn);
        }

        public override double acceptCash(double money)
        {
            if (money > this.lpMoneyCondtion)
            {
                return money - lpMoneyReturn ;
            }
            else
            {
                return money ;
            }
        }
    }

    //一个简单的收费工程类
    class CashFactary
    {
        public static CashSuper CreateCashSuper (string type)
        {
            CashSuper lpReturnCsahSuper = null;

            switch (type)
            {
                case "正常收费":
                    {
                        lpReturnCsahSuper = new CashNormaI();
                        break;
                    }
                case "满300减100":
                    {
                        lpReturnCsahSuper = new CashReturn("300", "100");
                        break;
                    }
                case "打8折":
                    {
                        lpReturnCsahSuper = new CashRebate("0.8");
                        break;
                    }
            }
            return lpReturnCsahSuper;
        }
    }

    //客户端程序 
    class MainFunction
    {
        public MainFunction()
        {
            Console.WriteLine("选择你的收费类型 ：");
            Console.WriteLine(" 1. 正常收费");
            Console.WriteLine(" 2. 满减收费");
            Console.WriteLine(" 3. 打折收费");
            string numberForClose = "";
            numberForClose = Console.ReadLine();
            string lpChoiceType = "";
            switch(numberForClose)
            {
                case "1":
                    {
                        lpChoiceType = "正常收费";
                        break;
                    }
                case "2":
                    {
                        lpChoiceType = "满300减100";
                        break;
                    }
                case "3":
                    {
                        lpChoiceType = "打8折";
                        break;
                    }
            }

            CashSuper lpObject = null;
            lpObject = CashFactary.CreateCashSuper(lpChoiceType);
            Console.WriteLine("输入你的金额 ：");
            string numberOfMoney = "";
            numberOfMoney = Console.ReadLine();
            double returnNumber = 0d;
            returnNumber = lpObject.acceptCash(double.Parse(numberOfMoney));
            Console.WriteLine("应收现金 ： " + returnNumber);
        }
    }
}

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设计模式03 简单的工厂设计模式 bylp
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