//using System;
//using System.Collections.Generic;
//using System.Text;

//namespace c_sharp_experiment02
//{
//    class CRect
//    {
//        private int top, bottom, left, right;
//        public static int total_rects = 0;
//        public static long total_rect_area = 0;
//        public CRect(){
//            left = top = right = bottom = 0;
//            total_rects++;
//            total_rect_area += getHeight() * getWidth();
//            Console.WriteLine("CRect() Constructing rectangle numer{0}", total_rects);
//            Console.WriteLine("Total rectangle areas is:{0}", total_rect_area);
//        }
//        public CRect(int x1,int y1,int x2,int y2) {
//            left = x1;top = y1;
//            right = x2;bottom = y2;
//            total_rects++;
//            total_rect_area+= getHeight() * getWidth();
//            Console.WriteLine("CRect(int,int,int,int) Constructing rectangle numer{0}", total_rects);
//            Console.WriteLine("Total rectangle areas is:{0}", total_rect_area);
//        }
//        public CRect(CRect r) {
//            left = r.left;
//            right = r.right;
//            top = r.top;
//            bottom = r.bottom;
//            total_rects++;
//            total_rect_area += getHeight() * getWidth();
//            Console.WriteLine("CRect(CRect&) Constructing rectangle numer{0}", total_rects);
//            Console.WriteLine("Total rectangle areas is:{0}", total_rect_area);
//        }
//        public int getHeight() {
//            return top > bottom ? top - bottom : bottom - top;
//        }
//        public int getWidth() {
//            return right > left ? right - left : left - right;
//        }
//        public static int getTotalRects() {
//            return total_rects;
//        }
//        public static long getTotalTectArea() {
//            return total_rect_area;
//        }
//    }
//    class Test2_4 {
//        public static void Main(string[] args) {
//            CRect rect1 = new CRect(1, 3, 6, 4), rect2 = new CRect(rect1);
//            Console.WriteLine("Rectangle 2:Height:{0},Width:{1}",rect2.getHeight(),rect2.getWidth());
//            {
//                CRect rect3 = new CRect();
//                Console.WriteLine("Rectangle3:Height:{0},Width:{1}", rect3.getHeight(), rect3.getWidth());
//            }
//            Console.Write("total_rects={0},", CRect.total_rects);
//            Console.WriteLine("total_rect_area={0}", CRect.total_rect_area);
//        }
//    }
//}