using System;
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 number {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 number {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 number {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 getTotalRectArea()
{ return total_rect_area; }
}
public class Test31
{
public static void Main ( )
{
CRect rect1=new CRect(1,3,6,4),rect2=new CRect(rect1);
Console.Write("Rectangle 2: Height: {0}", rect2.getHeight() );
Console.WriteLine(", Width: {0}", rect2.getWidth());
{ //注释1
CRect rect3 = new CRect();
Console.Write("Rectangle 3: Height: {0}", rect3.getHeight()) ;
Console.WriteLine( ", Width: {0}", rect3.getWidth());
} //注释2
Console.Write("total_rects={0}", CRect.total_rects);
Console.WriteLine(" total_rect_area={0}", CRect.total_rect_area);
Console.Read();
}
2. 编辑、编译和运行程序，运行结果如图T3.1所示。
图T3.1 程序运行结果