CGAL users discussion list

[Ben Galehouse <>]

Quoting Xiaofan Li 
<>:

> As far as I remembered (might be inaccurate), new[] does not   
> initialise all but the first element of the object array. It just   
> allocates the necessary memory space. Try std::vector or std::list   
> instead.

new[] calls the default constructor (and only the default constructor)  
which should be fine in this case.

The only other quirk of new[] that I can think of is that you are  
supposed to use delete []. However, if you simply leave it allocated  
till the end, in something like this, it is normally only valgrind  
that complains. (Though of course this is a big deal in real code)

Addressing the original poster, there is nothing obviously wrong with  
the code besides those annoying links and some things that were  
apparently left out. Adding the delete [] and making changes  
sufficient to compile, I ended up with the file below, and it seems  
fine with gcc 4.3 under linux. It is highly likely that you have an  
overall configuration problem. Do the CGAL examples work? It might be  
that the more MS focused people here might be able to tell you more if  
you gave exact compiler version information and the like.

-----------------------

#include <CGAL/basic.h>
#include <CGAL/Point_2.h>
#include <CGAL/Cartesian.h>
#include <CGAL/Polygon_2.h>
typedef CGAL::Cartesian <double > K;
typedef K::Point_2 Point;
typedef CGAL::Polygon_2 <K> Polygon_2 ;
using std::cout;
using std::endl;

int  main()
{
Point *points;

points=new Point[ 5 ];

for(int j=0;j<5;j++){

     points[j]=Point(2,4);}

 delete [] points;
}