request for member ‘’ in ‘’, which is of non-class type ‘'

[eagle3033]

hi there
i'm writing some codes (oop code) in linux (ubuntu) in witch class ellastic is defined as below in prelim header :

template <int dim>
class elastic
{
public:

elastic(const Triangulation<dim> *triang);
~elastic() ;

void one_step () ;


private:
. ...

and in another header i have

#include "prelim.h"
template <int dim>

elastic<dim>::elastic(const Triangulation<dim> *triang): dof_handler (triangulation), fe (FE_Q<dim>(1))

{triangulation.copy_triangulation (*triang);}

template <int dim>

elastic<dim>::~elastic ()
{
dof_handler.clear ();
}

and finily in main :

elastic<2> elast_opt() ;
elast_opt.one_step ;

...

after trying to make i get this error :

error: request for member ‘one_step’ in ‘elast_opt’, which is of non-class type ‘elastic<2>()’
i tried so many ways but no answer so any help would be appreciated .

regards
S.M.Mohseni

[Peter87]

This is a function declaration elastic<2> elast_opt() ; Remove the parenthesis and it will hopefully work better elastic<2> elast_opt;