c#learn

using System;namespace RectangleApplication{    class Rectangle    {        // 成员变量        double length;        double width;        public void Acceptdetails()        {            length = 4.5;                width = 3.5;        }        public double GetArea()        {            return length * width;        }        public void Display()        {            Console.WriteLine("Length: {0}", length);            Console.WriteLine("Width: {0}", width);            Console.WriteLine("Area: {0}", GetArea());        }    }        class ExecuteRectangle    {        static void Main(string[] args)        {            Rectangle r = new Rectangle();            r.Acceptdetails();            r.Display();            Console.ReadLine();        }    }}