抽象类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 抽象类
{
    class Nan : Ren
    {
        public override void chifan()
        {
            Console.WriteLine("我是男人，我大口吃饭！");
        }

        public override void xihuanchi()
        {
            Console.WriteLine("我是男人，我喜欢吃肉！");
        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 抽象类
{
    abstract class Ren
    {
        public virtual void chifan()
        {
            Console.WriteLine("用嘴吃饭！");
        }

        public abstract void xihuanchi();

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 抽象类
{
    class Program
    {
        static void Main(string[] args)
        {
            Nan n = new Nan();
            n.chifan();
            n.xihuanchi();

            Ren r = new Nan();
            r.xihuanchi();



            Console.ReadKey();
        }
    }
}