1 /*
2 * 在图书销售时，根据不同类型的图书有不同的折扣，计算金额时必须区别对待，
3 * 例如计算机类图书7折，英语类图书6折。应用策略模式，用C#控制台应用程序
4 * 实现该设计。
5 */
6 using System;
7 using System.Collections.Generic;
8 using System.Linq;
9 using System.Text;
10
11 namespace Strategy
12 {
13 abstract class Strategy
14 {
15 public abstract double AlgorithmInterface(
double Money);
16 }
17 class CSStrategy : Strategy
18 {
19 public override double AlgorithmInterface(
double Money)
20 {
21 Console.WriteLine(
"计算机类书打七折。");
22 return (Money*
0.7);
23 }
24 }
25 class EngStrategy : Strategy
26 {
27 public override double AlgorithmInterface(
double Money)
28 {
29 Console.WriteLine(
"英语类书打六折。");
30 return (Money *
0.6);
31 }
32 }
33 class Context
34 {
35 Strategy strategy;
36 public Context(Strategy strategy)
37 {
38 this.strategy =
strategy;
39 }
40 public double GetResult(
double Money)
41 {
42 return strategy.AlgorithmInterface(Money);
43 }
44 }
45 class Program
46 {
47 static void Main(
string[] args)
48 {
49 Context context;
50 context =
new Context(
new CSStrategy());
51 Console.WriteLine(
"需支付" + context.GetResult(
100) +
"￥");
52
53 context =
new Context(
new EngStrategy());
54 Console.WriteLine(
"需支付" + context.GetResult(
100) +
"￥");
55 }
56 }
57 }
转载于:https://www.cnblogs.com/CheeseZH/archive/2012/05/16/2505570.html
