using System;
namespace P6_5
{
    // Car
    class Car
    {
        public virtual void DescribeCar()
        {
         Console.WriteLine("ĸӺһ");
        }
    }
    // 
    class Trunk : Car
    {
        public new virtual void DescribeCar()
        {
            base.DescribeCar();
            Console.WriteLine("2ˡ");
        }
    }
    class Minivan : Car
    {
        public override void DescribeCar()
        {
            base.DescribeCar();
            Console.WriteLine("7ˡ");
        }
    }
    class Program
    {
        static void Main()
        {
            Car car1 = new Car();
            car1.DescribeCar();
            Console.WriteLine("");
            Trunk car2 = new Trunk();
            car2.DescribeCar();
            Console.WriteLine("");
            Minivan car3 = new Minivan();
            car3.DescribeCar();
            System.Console.WriteLine("");
            Console.ReadLine();
        } 
     }
}
