面向对象：接口

namespace ConsoleApplication4
{
    class dongwu
    {
        public void youyong()
        {
            Console.WriteLine("She was splendid like our flagship!");
        }
        public void quanji()
        {
            Console.WriteLine("But it's all in the past!");
        }
        public void tiaowu()
        {
            Console.WriteLine("Target Yamato!");
        }
    }
}

namespace ConsoleApplication4
{
    class dog:dongwu,Interface1,Interface2
    {
        void Interface1.changge()
        {
            Console.WriteLine("She never gave up the hope even till the end!");
        }
        void Interface2.changge()
        {
            Console.WriteLine("Only the sea knows!");
        }
    }
}

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {
            dog data = new dog();
            Interface1 idata = new dog();//接口不能建立自己的实例，可以通过子类新建自己的实例


         
            dog data1 = new dog();
            Interface1 idata1 = data1;//接口可以实现基类的类型相互转换
            data1 = (dog)idata1;



            Interface1 idatai = new dog();//显示接口，接口中同名函数区分：子类中“Interface.方法名()”区分
            Interface2 idataii = new dog();
            idatai.changge();//显示接口的方法必须通过接口类型实例调用
            idataii.changge();

            idatai.tiaowu();//接口中同名函数不区分方法默认为所有接口中都是同一个方法
            idataii.tiaowu();



            Console.ReadLine();

        }
    }
}