#include <octave/oct.h>

DEFUN_DLD (stringdemo, args, , "String Demo")
{
  octave_value_list retval;

  if (args.length () != 1)
    print_usage ();

  charMatrix ch = args(0).char_matrix_value ();

  retval(1) = octave_value (ch, '\'');  // Single Quote String

  octave_idx_type nr = ch.rows ();

  for (octave_idx_type i = 0; i < nr / 2; i++)
    {
      std::string tmp = ch.row_as_string (i);

      ch.insert (ch.row_as_string (nr-i-1).c_str (), i, 0);
      ch.insert (tmp.c_str (), nr-i-1, 0);
    }

  retval(0) = octave_value (ch, '"');  // Double Quote String

  return retval;
}