6.19 多态

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

namespace _6._19_多态
{
    class Program
    {
        static void Main(string[] args)
        {
            /*多态，有了继承才有多态
            继承同一个父类的所有子类，使用起来都不一样*/
            Console.WriteLine("男人");
            men m = new men();
            m.chifan();
            m.xihuanchi();
            m.zuqiu();


            Console.WriteLine("女人");
            women w = new women();
            w.chifan();
            w.xihuanchi();
            w.guangjie();

            Console.WriteLine("小男孩");
            xiaomen x = new xiaomen();
            x.naifen();
            x.xihuanchi();//执行men 里面的语句，而不是ren 里面的语句
            x.chifan();

            Console.ReadLine();


        }
    }
}

      第一父集   REN

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

namespace _6._19_2_抽象类
{
    public abstract  class ren
    {
        public abstract void chifan();
        public abstract void hejiu();
        public void huxi()
    {
        Console.WriteLine("人需要呼吸");
    }
        public virtual void heshui()
        {
            Console.WriteLine("人需要喝水");
        }
        public  void yule()
    {
        Console.WriteLine("父集人需要娱乐");
    }
        public abstract void pengyou()
        {
            Console.WriteLine("喜欢交朋友");
        }
        
    }
}

第二层 子集 nanren

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

namespace _6._19_2_抽象类
{
    class nanren : ren //子集不需要注明，类型是抽象类
    {
        public override void chifan()
        {
            Console.WriteLine("喜欢吃肉");
        }
        public override void hejiu()
        {
            Console.WriteLine("喜欢喝梦之蓝");
        }
        public override void pengyou()
        { 
        
        }
       
    }
}

Women

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

namespace _6._19_多态
{
    class women:ren
    {
        public override void xihuanchi()
        {
            Console.WriteLine("我是女人，喜欢吃菜");
         }
        public void guangjie()
        {
            Console.WriteLine("我爱逛街");
        }
    }
}

xiaoren

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

namespace _6._19_多态
{
    class xiaomen : men
    {
        public void naifen()
        {
            Console.WriteLine("喜欢吃奶粉");
        }
    }
}