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[Aomandeyi <>]

my codes are as follow , i don't sure the parameters of
"print_incident_halfedges()" is "arr.vertex_handles" or not.
------------------------------------------------------------
#include <CGAL/Cartesian.h>
#include <CGAL/Arr_non_caching_segment_traits_2.h>
#include <CGAL/Arrangement_2.h>
typedef int Number_type;
typedef CGAL::Cartesian<Number_type> Kernel;
typedef CGAL::Arr_non_caching_segment_traits_2<Kernel> Traits;
typedef Traits::Point_2 Point;
typedef Traits::X_monotone_curve_2 Segment;
typedef CGAL::Arrangement_2<Traits> Arrangement;

template <typename Arrangment>
void print_incident_halfedges(typename Arrangement::Vertex_const_handle v)
{
        if (v−> is_isolated()) {
                std::cout << "The vertex (" << v−> point() << ") is isolated" 
<<
std::endl;
                return;
        }
}
int main()
{
        Point p1(1, 1), p2(1, 2), p3(2, 1);
        Segment cv[] = { Segment(p1, p2) , Segment(p2, p3) , Segment(p3, p1) 
};
        Arrangement arr;
        insert(arr, &cv[0], &cv[sizeof(cv) / sizeof(Segment)]);
        print_incident_halfedges(arr.vertex_handles);
   return 0;
}
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