接口 Interface

using System;
using System.Collections;
using System.Collections.Generic;
namespace Dome
{
    class dom
    {
        static void Main(string[] args)
        {
            play iplay = new student();
            iplay.iplay();
            Console.WriteLine();
            Console.ReadKey();
        }
    }
    public class person {//父类
        public void sayhello() { Console.WriteLine("我是人类"); }
    }
    public class student:person,play {//继承父类person和接口play  必须实现接口中的成员
        public void hello() { Console.WriteLine("我是学生"); }
        public void iplay() { Console.WriteLine("实现接口"); }
    }
    interface play {//接口中的成员默认是public
        void iplay();
    }
}