Thread: This pointer

<code>
class CPoint3d
{public:
int x;
int y;
CPoint3d(const CPoint3d &pt);
CPoint3d(int cx, int cy);
}

CPoint3d::CPoint3d(const CPoint3d& pt)
{
this->x = pt.x;
this->y = pt.y;
}

CPoint3d(int cx, int cy)
{x=cx;
y=cy;
}

int main()
{CPoint3d one(2,3);
CPoint3d two(&one);
cout<<one.x<<endl<<one.y<<endl
<<two.x<<endl<<two.y<<endl;
return 0:
}
</code>


Is it really necessary to include the this->variable in this copy constructor?

sorry about the bad spacing, I am new to the board tags and kind of used to html. Here it is spaced out.

Code:

class CPoint3d 
{public: 
    int x; 
    int y;  
    CPoint3d(const CPoint3d &pt); 
    CPoint3d(int cx, int cy); 
} 

CPoint3d::CPoint3d(const CPoint3d& pt) 
{ 
   this->x = pt.x; 
   this->y = pt.y; 
} 

CPoint3d(int cx, int cy) 
{
  x=cx; 
  y=cy; 
} 

int main() 
{CPoint3d one(2,3); 
  CPoint3d two(&one); 
  cout<<one.x<<endl<<one.y<<endl 
         <<two.x<<endl<<two.y<<endl; 
  return 0: 
}

Thanx. I am not used to OOP programming and need to get the syntax down.