继承_封装_多态 02

真假Dcuk

namespace Duck
{
    abstract class SubDuck
    {
        public abstract string Name
        {
            get;
            set;
        }
        //string name;
        //public string Name
        //{
        //    get { return name; }
        //    set { name = value; }
        //}
        public void Swin()
        {
            Console.WriteLine("我会游泳。");
        }
        public abstract void Jiao();
    }
    class RealDuck : SubDuck, IFly
    {
        string name;
        public override void Jiao()
        {
            Console.WriteLine("嘎嘎~~~嘎嘎");
        }

        public override string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }
        public void ifiy()
        {
            Console.WriteLine("i can fly.");
        }
    }
    class RubberDuck : SubDuck, INolive
    {
        string name;
        public override void Jiao()
        {
            Console.WriteLine("唧唧~jiji唧唧");
        }
        public override string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }
        public void Nolive()
        {
            Console.WriteLine("i no lifeing.");
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Random ri = new Random();//ding yi yi ge shuiji shu 
            SubDuck[] sub = new SubDuck[100];//dingyi shuji shuzhu
            for (int i = 0; i < sub.Length; i++)//for xunhuan
            //foreach (var i in sub) ;
            {
                if (ri.Next(2) == 0)//shui ji de naqu liangge shu 
                {
                    sub[i] = new RealDuck();
                    sub[i].Name = "真鸭子" + (i + 1).ToString("000");
                    //sub[0].Swin = "游泳";
                }
                else
                {
                    sub[i] = new RubberDuck();
                    sub[i].Name = "橡皮鸭子" + (i + 1).ToString("000");
                    //sub[1].Swin = "游泳";
                }
            }
            for (int i = 0; i < sub.Length; i++)//for out
            {
                Console.WriteLine("{0}", sub[i].Name);
                sub[i].Jiao();
                IFly ff = sub[i] as IFly;
                if (ff != null)
                {
                    ff.ifiy();
                }
                else
                {
                    ((INolive)sub[i]).Nolive();
                }
                sub[i].Swin();
            }
            //Console.WriteLine("{0}   ", sub[1].Name, );
            Console.ReadKey();
        }
    }