C#-超市收银系统

class ProductFather
    {
        public double Price {
            get;
            set;
        }
        public double Count {
            get;
            set;
        }
        public string ID {
            get;
            set;
        }

        public ProductFather(string id,double price,string name) {
            this.ID = id;
            this.Price = price;
            this.Count = count;
        }
    }

class SamSung : ProductFather
    {
        public SamSung(string id, double price, string name) : base(id, price, name)
        {

        }
    }

		//创建仓库
        //List<ProductFather> list = new List<ProductFather>();
        List<List<ProductFather>> list2 = new List<List<ProductFather>>();
        /// <summary>
        /// 有啥商品都展示一下子
        /// </summary>
        public void ShowPros() {
            foreach (var item in list2)
            {
                Console.WriteLine("我们仓库有："+item[0].Name+"\t"+"有"+item.Count+"个"+"\t"+"每个"+item[0].Price+"元");
            }
        }
        //list[0]存储电脑
        //list[1]存储手机
        //list[2]存储酱油
        //list[3]存储香蕉
        /// <summary>
        /// 在创建仓库的时候 向仓库中添加货架
        /// </summary>
        public CangKu(){
            list2.Add(new List<ProductFather>());
            list2.Add(new List<ProductFather>());
            list2.Add(new List<ProductFather>());
            list2.Add(new List<ProductFather>());
        }

		/// <summary>
        /// 进货
        /// </summary>
        /// <param name="strType">货物类型</param>
        /// <param name="count">货物数量</param>
        public void GetPors(string strType,int count) {
            for (int i = 0; i < count; i++)
            {
                switch (strType)
                {
                    case "Acer":list2[0].Add(new Acer(Guid.NewGuid().ToString(), 1000, "宏基笔记本"));
                        break;
                    case "SamSung":list2[1].Add(new SamSung(Guid.NewGuid().ToString(), 2000, "三星手机"));
                        break;
                    case "jiangyou":list2[2].Add(new jiangyou(Guid.NewGuid().ToString(), 20, "酱油"));
                        break;
                    case "Banana":list2[3].Add(new Banana(Guid.NewGuid().ToString(), 10, "香蕉"));
                        break;
                }
            }
        }

		/// <summary>
        /// 出货
        /// </summary>
        /// <param name="strType">货物类型</param>
        /// <param name="count">货物数量</param>
        /// <returns></returns>
        public ProductFather[] Outpors(string strType, int count) {
            ProductFather[] pors = new ProductFather[count];
            for (int i = 0; i < count; i++)
            {
                switch (strType)
                {
                    case "Acer":pors[i]= list2[0][0];
                    //list[0]是我们放笔记本的货架  list[0][0]是该货架第一个 单纯的赋值代码
                        list2[0].RemoveAt(0);
                    //每一次都删除第一个货物
                        break;
                    case "SamSung": pors[i] = list2[1][0];
                        list2[1].RemoveAt(0);
                        break;
                    case "jiangyou":pors[i] = list2[2][0];
                        list2[2].RemoveAt(0);
                        break;
                    case "Banana":pors[i] = list2[3][0];
                        list2[3].RemoveAt(0);
                        break;
                }
            }
            return pors;
        }

		class SupperMarket
    {
        //创建仓库对象
        CangKu ck = new CangKu();
        /// <summary>
        /// 创建超市对象的时候，给仓库的货架上导入货物
        /// </summary>
        public SupperMarket() {
            ck.GetPors("Acer",50);
            ck.GetPors("SamSung", 50);
            ck.GetPors("jiangyou", 50);
            ck.GetPors("Banana", 50);
        }
        public void AskBuying() {
            Console.WriteLine("我们有，Acer，SamSung，jiangyou，Banana");
            string strType = Console.ReadLine();
            Console.WriteLine("你要多少");
            int count = Convert.ToInt32(Console.ReadLine());
            //去仓库取货
            ProductFather[] pros = ck.Outpors(strType,count);
            //计算价钱
            double realMoney = GetMoney(pros);
            Console.WriteLine("你总该付{0}",realMoney);
            Console.WriteLine("請選擇你的打折方式1--不打折，2--打九折，3--打85折，4--滿300送50,5---滿500送100");
            string input = Console.ReadLine();
            //通过简单工厂的设计模式根据用户的输入获得一个打折对象
            CalFather cal = GetCal(input);
            double totalMoney = cal.GetTotalMoney(realMoney);//传入打折前的价格 返回折后价格
            Console.WriteLine("打完折后，您应该付{0}",totalMoney);
            Console.WriteLine("以下是您的購物信息");
            foreach (var item in pros)
            {
                Console.WriteLine("貨物名稱"+item.Name + "\t"+"貨物單價" +item.Price + "\t" +"貨物編號"+item.ID);
            }
        }
        
        /// <summary>
        /// 根据用户的选择打折方式返回一个打折对象
        /// </summary>
        /// <param name="input">用户的选择</param>
        /// <returns>返回父类的对象  但是里边装的是子类对象</returns>
        public CalFather GetCal(string input) {
            CalFather cal = null;
            switch (input)
            {
                case "1": cal = new CalNormal();
                    break;
                case "2":cal = new CalRate(0.9);
                    break;
                case "3":cal = new CalRate(0.85);
                    break;
                case "4":cal = new CalMN();
                    break;
            }
            return cal;
        }

        /// <summary>
        /// 根据用户买的货物计算总价
        /// </summary>
        /// <param name="pors"></param>
        /// <returns></returns>
        public double GetMoney(ProductFather[] pors) {
            double realMoney = 0;
            for (int i = 0; i < pors.Length; i++)
            {
                realMoney += pors[i].Price;
            }
            return realMoney;
        }

        public void ShowPros() {
            ck.ShowPros();
        }
    }
        }
    }

/// <summary>
    /// 打折的父类
    /// </summary>
    /// abstract表示这是一个抽象类
    abstract class CalFather
    {
        /// <summary>
        /// 打折后该负多少钱
        /// </summary>
        /// <param name="realMoney">打折前应付价钱</param>
        /// <returns>打折后该付的多少钱</returns>
        public abstract double GetTotalMoney(double realMoney);
        
    }

 /// <summary>
    /// 按折扣率打折
    /// </summary>
    class CalRate : CalFather
    {
        /// <summary>
        ///折扣率
        /// </summary>
        public double Rate
        {
            get;
            set;
        }
        public CalRate(double rate) {
            this.Rate = rate;
        }
        public override double GetTotalMoney(double realMoney)
        {
            return realMoney * this.Rate;
        }
    }

 static void Main(string[] args)
        {
            //创建超市对象
            SupperMarket sm = new SupperMarket();
            //展示货物
            sm.ShowPros();
            sm.AskBuying();
            Console.ReadKey();
            Console.WriteLine("Hello World!");
        }