function n = p02_n ( )

%*****************************************************************************80
%
%% P02_N returns the number of variables N for problem 2.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    16 April 2012
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Output, integer N, the number of variables.
%
  n = 3;

  return
end