C#编程：设计一个交通工具类Vehicle，包含的数据成员有车轮个数wheels和车重weigh

设计一个交通工具类Vehicle，包含的数据成员有车轮个数wheels和车重weight。以及带有这两个参数的构造方法，具有Run方法，Run中方法输出running字样。小车类Car是它的子类，其中增加了数据成员车载人数passenger_load。Car类中有带参数的构造方法，重写Run方法：输出Car is running。并重写ToString()方法：显示car中信息（显示车轮数、车重、车载人数）。最后编写主方法，定义car的对象，并调用Run方法，以及显示car中信息。

具体代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            Car car = new Car(4, 10000.0, 5);
            car.Run();
            car.ToString();
 
            Console.Read();
        }
    }
 
    class Vehicle
    {
        private int wheels;
        private double weight;
 
        public int Wheels
        {
            set { wheels = value; }
            get { return wheels; }
        }
 
        public double Weight
        {
            set { weight = value; }
            get { return weight; }
        }
 
        public Vehicle(int wheels, double weight)        
        {
            this.wheels = wheels;
            this.weight = weight;
        }
 
        public virtual void Run()
        {
            Console.WriteLine("running");
        }
    }
 
    class Car : Vehicle
    {
        private int passenger_load;
 
        public Car(int wheels, double weight, int passenger_load)
            :base(wheels, weight)
        {
            this.passenger_load = passenger_load;
        }
 
        public override void Run()
        {
            Console.WriteLine("Car is running");
        }
 
        public override string ToString()
        {
            Console.WriteLine("车轮数{0}，车重{1}，车载人数{2}", Wheels, Weight, passenger_load);
            return base.ToString();
        }
 
    }
}