#include <octave/oct.h> DEFUN_DLD (helloworld, args, nargout, "Hello World Help String") { octave_stdout << "Hello World has " << args.length () << " input arguments and " << nargout << " output arguments.\n"; // Return empty matrices for any outputs octave_value_list retval (nargout); for (int i = 0; i < nargout; i++) retval(i) = octave_value (Matrix ()); return retval; }