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

namespace ConsoleAbstact
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Train t = new Train();
            Car c = new Car();
            Vehicle v = t;
            v.Name = "火车";
            v.Move();

            Console.ReadLine();
        }
    }

    abstract class Vehicle
    {
        public string Name { get; set; }
        public abstract void Move();
    }

    class Train : Vehicle
    {
        public override void Move()
        {
            Console.WriteLine("{0}在铁轨上行驶", Name);
        }
    }

    class Car : Vehicle
    {
        public override void Move()
        {
            Console.WriteLine("{0}在公路上行驶",Name);
        }
    }
}