02-类的定义

/*
 * Notes: 
 * 1. 标识符必须以字母、下划线或 @ 开头，后面可以跟一系列的字母、数字（ 0 - 9 ）、下划线（ _ ）、@
 * 
 */

using System;

namespace RectangleApplication
{
    class Rectangle
    {
        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 ExcecuteRectangle
    {
        static void Main(string[] args)
        {
            Rectangle r = new Rectangle();
            r.Acceptdetails();
            r.Display();
            Console.ReadLine();
        }
    }
}