策略模式演示

参考:

AwardSuper.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace StrategyMode
{
    abstract class AwardSuper
    {
        public abstract string Award(double courseMark,double moralMark,double gymMark);
    }
}

ThreeGoodAward.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace StrategyMode
{
    class ThreeGoodAward : AwardSuper
    {
        public override string Award(double courseMark,double moralMark,double gymMark)
        {
            if (courseMark >= 80 && moralMark >= 80 && gymMark >= 80)
                return "三好学生";
            else
                return "";
        } 
    }
}

CourseAward.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace StrategyMode
{
    class CourseAward :AwardSuper
    {
        public override string Award(double courseMark, double moralMark, double gymMark)
        {
            if (courseMark >= 80)
                return "课程奖";
            else
                return "";
        }
    }
}

MoralAward.cs:

using System;
using System.Collections.Generic;
using System.Text;
namespace StrategyMode
{
    class MoralAward :AwardSuper
    {
        public override string Award(double courseMark, double moralMark, double gymMark)
        {
            if (moralMark >= 90 && moralMark >= 60&&gymMark >= 60)
                return "道德奖";
            else
                return "";
        }
    }
}

AwardContext.cs:

using System;
using System.Collections.Generic;
using System.Text;
namespace StrategyMode
{
 class AwardContext
 {
    private AwardSuper aws;
    public AwardContext(AwardSuper asuper)
    {
        this.aws=asuper;
    }
    public string GetResult(double courseMark, double moralMark, double gymMark)
    {
        return aws.Award(courseMark,moralMark,gymMark);
    }
 }
}

Program.cs:

using System;
namespace StrategyMode
{
    class Program
    {
        static void Main(string[] args)
        {
            AwardContext cc = null;
            string strSel = string.Empty;
            Console.WriteLine("请选择奖励种类:");
            strSel=Console.ReadLine();
            switch(strSel)
            {
                case "three":
                    cc = new AwardContext(new ThreeGoodAward());
                    break;
                case "course":
                    cc = new AwardContext(new CourseAward());
                    break;
                case "moral":
                    cc = new AwardContext(new MoralAward());
                    break;
            }
            Console.WriteLine("请输入Course Mark:");
            string courseMark = Console.ReadLine();
            Console.WriteLine("请输入Moral Mark:");
            string moralMark = Console.ReadLine();
            Console.WriteLine("请输入Gym Mark:");
            string gymMark = Console.ReadLine();
            string strResult = cc.GetResult(Convert.ToDouble(courseMark),Convert.ToDouble(moralMark), Convert.ToDouble(gymMark));
            Console.WriteLine(strResult);
        }
    }
}