using System;
namespace RectangleApplication
{
    class Rectangle
    {
        // 成员变量
        double height;
        double width;
        public void Acceptdetails()
        {
            height = 3;    
            width = 4;
        }
        public double GetArea()
        {
            return height * width;
        }
        public void Display()
        {
            Console.WriteLine("Length: {0}",height);
            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();
        }
    }
}