Kindly Explain the reason behind this?

hello,
When i run the below code i am getting the value of copyconscount as 2 and not 3 Please tell me why is it happening?the copy constructor is called thrice in the program and still why is it showing only 2??

Code:

#include <iostream.h>
class room
{
  int width;
  int height;
  static int copyconscount;
  public:
	  room()
	  {
		  width=12;
		  height=8;
	  }
	  room(room &r)
	  {
		 width=r.width;
		 height=r.height;
		 copyconscount++;
	  }
	  void dispcopyconscount()
	  {
		  cout<<copyconscount;
		  cout<<endl<<height;
		  cout<<endl<<width;
	  }
};
int room::copyconscount;
int main(void)
{
 room objroom1;
 room objroom2(objroom1);
 room objroom3=objroom1;
 room objroom4;
 objroom4=objroom3;
 objroom4.dispcopyconscount();

 return 0;
}

You only invoke the copy constructor twice, i.e.,

Code:

 room objroom2(objroom1);
 room objroom3=objroom1;

So what's the problem laserlight??just see the below code

Code:

int main(void)
{
 clrscr();
 room objroom1;
 room objroom2(objroom1);
 room objroom3=objroom1;
 room objroom4=objroom3;
 objroom4=objroom3;
 objroom2.dispcopyconscount();
 return 0;

}

i am stilling calling the constructor twice but now its printing 3??

i am stilling calling the constructor twice but now its printing 3??

No, you are now invoking the copy constructor three times with:

Code:

room objroom2(objroom1);
room objroom3=objroom1;
room objroom4=objroom3;

You are also invoking the copy assignment operator with:

Code:

objroom4=objroom3;

And of course the default constructor with:

Code:

room objroom1;