C#简易超市收银系统

 1 using System;
 2 
 3 namespace 超市系统
 4 {
 5     class Program
 6     {
 7         static void Main(string[] args)
 8         {
 9             //创建超市对象
10             SupperMarket sm = new SupperMarket();
11             //展示货物
12             sm.ShowPros();
13             //跟用户交互
14             sm.AskBuying();
15             Console.ReadKey();
16         }
17     }
18 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统 
 8 { 
 9 
10         class ProductFather
11         {
12             public double Price
13             {
14                 get;
15                 set;
16             }
17 
18             public string Name
19             {
20                 get;
21                 set;
22             }
23 
24             public string ID
25             {
26                 get;
27                 set;
28             }
29 
30             public ProductFather(string id, double price, string Name)
31             {
32                 this.ID = id;
33                 this.Price = price;
34                 this.Name = Name;
35             }
36         }
37 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class Acer:ProductFather
10     {
11         public Acer(string id, double price, string Name)
12             : base(id, price, Name)
13         {
14 
15         }
16     }
17 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class Banana:ProductFather
10     {
11         public Banana(string id, double price, string Name)
12             : base(id, price, Name)
13         {
14 
15         }
16     }
17 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class JiangYou:ProductFather
10     {
11         public JiangYou(string id, double price, string Name)
12           : base(id, price, Name)
13         {
14 
15         }
16     }
17 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class SamSung:ProductFather
10     {
11         public SamSung(string id, double price, string Name)
12             : base(id, price, Name)
13         {
14 
15         }
16     }
17 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class CangKu
10     {
11         List> list = new List>();
12 
13 
14 
15         /// 

16         ///向用户展示货物
17         /// 
18         public void ShowPros()
19         {
20             foreach (var item in list)
21             {
22                 Console.WriteLine("我们超市有：" + item[0].Name + "," + "\t" + "有" + item.Count + "个," + "\t" + "每个" + item[0].Price + "元");
23             }
24         }
25         //list[0]存储Acer电脑
26         //list[1]存储三星手机
27         //list[2]存储酱油
28         //list[3]存储香蕉
29         /// 

30         /// 在创建仓库对象的时候 像仓库中添加货架
31         /// 
32         public CangKu()
33         {
34             list.Add(new List());
35             list.Add(new List());
36             list.Add(new List());
37             list.Add(new List());
38         }
39         /// 

40         /// 进货
41         /// 
42         /// 货物的类型
43         /// 货物的数量
44         public void JinPros(string strType, int count)
45         {
46             for (int i = 0; i < count; i++)
47             {
48                 switch (strType)
49                 {
50                     case "Acer":
51                         list[0].Add(new Acer(Guid.NewGuid().ToString(), 1000, "宏基笔记本"));
52                         break;
53                     case "SamSung":
54                         list[1].Add(new SamSung(Guid.NewGuid().ToString(), 2000, "棒之手机"));
55                         break;
56                     case "JiangYou":
57                         list[2].Add(new JiangYou(Guid.NewGuid().ToString(), 10, "老抽酱油"));
58                         break;
59                     case "Banana":
60                         list[3].Add(new Banana(Guid.NewGuid().ToString(), 50, "大香蕉"));
61                         break;
62                 }
63             }
64         }
65         /// 

66         /// 从仓库中提取货物
67         /// 
68         /// 
69         /// 
70         /// 
71         public ProductFather[] QuPros(string strType, int count)
72         {
73             ProductFather[] pros = new ProductFather[count];
74             for (int i = 0; i < pros.Length; i++)
75             {
76                 switch (strType)
77                 {
78                     case "Acer":
79                         pros[i] = list[0][0];
80                         list[0].RemoveAt(0);
81                         break;
82                     case "SamSung":
83                         pros[i] = list[1][0];
84                         list[1].RemoveAt(0);
85                         break;
86                     case "JiangYou":
87                         pros[i] = list[2][0];
88                         list[2].RemoveAt(0);
89                         break;
90                     case "Banana":
91                         pros[i] = list[3][0];
92                         list[3].RemoveAt(0);
93                         break;
94                 }
95             }
96             return pros;
97         }
98     }
99 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     abstract class CalFather
10     {
11         public abstract double GetTotalMoney(double realMoney);
12     }
13 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class CalMN : CalFather
10     {
11         //买500送100
12         public double M
13         {
14             get;
15             set;
16         }
17 
18         public double N
19         {
20             get;
21             set;
22         }
23 
24         public CalMN(double m, double n)
25         {
26             this.M = m;
27             this.N = n;
28         }
29         public override double GetTotalMoney(double realMoney)
30         {
31             //600 -100
32             //1000-200
33             //1200
34             if (realMoney >= this.M)
35             {
36                 return realMoney - (int)(realMoney / this.M) * this.N;
37             }
38             else
39             {
40                 return realMoney;
41             }
42         }
43     }
44 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class CalNormal:CalFather
10     {
11         public override double GetTotalMoney(double realMoney)
12         {
13             return realMoney;
14         }
15     }
16 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace 超市系统
 8 {
 9     class CalRate:CalFather
10     {
11         /// 

12         /// 折扣率
13         /// 
14         public double Rate
15         {
16             get;
17             set;
18         }
19 
20         public CalRate(double rate)
21         {
22             this.Rate = rate;
23         }
24         public override double GetTotalMoney(double realMoney)
25         {
26             return realMoney * this.Rate;
27         }
28     }
29 }

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 
  7 namespace 超市系统
  8 {
  9     class SupperMarket
 10     {
 11         //创建仓库对象
 12         CangKu ck = new CangKu();
 13         /// 

 14         /// 创建超市对象的时候，给仓库的货架上导入货物
 15         /// 
 16         public SupperMarket()
 17         {
 18             ck.JinPros("Acer", 1000);
 19             ck.JinPros("SamSung", 1000);
 20             ck.JinPros("JiangYou", 1000);
 21             ck.JinPros("Banana", 1000);
 22         }
 23 
 24 
 25         /// 

 26         /// 跟用户交互的过程
 27         /// 
 28         public void AskBuying()
 29         {
 30             Console.WriteLine("欢迎观临，请问您需要些什么？");
 31             Console.WriteLine("我们有 Acer、SamSung、Jiangyou、Banana");
 32             string strType = Console.ReadLine();
 33             Console.WriteLine("您需要多少？");
 34             int count = Convert.ToInt32(Console.ReadLine());
 35             //去仓库取货物
 36             ProductFather[] pros = ck.QuPros(strType, count);
 37             //下面该计算价钱了
 38             double realMoney = GetMoney(pros);
 39             Console.WriteLine("您总共应付{0}元", realMoney);
 40             Console.WriteLine("请选择您的打折方式 1--不打折 2--打九折  3--打85 折  4--买300送50  5--买500送100");
 41             string input = Console.ReadLine();
 42             //通过简单工厂的设计模式根据用户的舒服获得一个打折对象
 43             CalFather cal = GetCal(input);
 44             double totalMoney = cal.GetTotalMoney(realMoney);
 45             Console.WriteLine("打完折后，您应付{0}元", totalMoney);
 46             Console.WriteLine("以下是您的购物信息");
 47             foreach (var item in pros)
 48             {
 49                 Console.WriteLine("货物名称:" + item.Name + "," + "\t" + "货物单价:" + item.Price + "," + "\t" + "货物编号：" + item.ID);
 50             }
 51 
 52         }
 53 
 54 
 55 
 56 
 57 
 58 
 59 
 60         /// 

 61         /// 根据用户的选择打折方式返回一个打折对象
 62         /// 
 63         /// 用户的选择
 64         /// 返回的父类对象 但是里面装的是子类对象
 65         public CalFather GetCal(string input)
 66         {
 67             CalFather cal = null;
 68             switch (input)
 69             {
 70                 case "1":
 71                     cal = new CalNormal();
 72                     break;
 73                 case "2":
 74                     cal = new CalRate(0.9);
 75                     break;
 76                 case "3":
 77                     cal = new CalRate(0.85);
 78                     break;
 79                 case "4":
 80                     cal = new CalMN(300, 50);
 81                     break;
 82                 case "5":
 83                     cal = new CalMN(500, 100);
 84                     break;
 85             }
 86             return cal;
 87         }
 88 
 89 
 90 
 91 
 92         /// 

 93         /// 根据用户买的货物计算总价钱
 94         /// 
 95         /// 
 96         /// 
 97         public double GetMoney(ProductFather[] pros)
 98         {
 99             double realMoney = 0;
100             //realMoney = pros[0].Price * pros.Length;
101 
102             for (int i = 0; i < pros.Length; i++)
103             {
104                 realMoney += pros[i].Price;
105 
106                 // realMoney = pros[i] * pros.Length;
107             }
108             return realMoney;
109         }
110 
111 
112 
113 
114         public void ShowPros()
115         {
116             ck.ShowPros();
117         }
118 
119     }
120 }