#include <octave/oct.h>

DEFUN_DLD (globaldemo, args, , "Global demo.")
{
  int nargin = args.length();
  octave_value retval;

  if (nargin != 1)
    print_usage ();
  else
    {
      std::string s = args(0).string_value ();
      if (! error_state)
	{
	  octave_value tmp = get_global_value (s, true);
	  if (tmp.is_defined ())
	    retval = tmp;
	  else
	    retval = "Global variable not found";

	  set_global_value ("a", 42.0);
	}
    }
  return retval;
}