function isbn10_code_test ( )

%*****************************************************************************80
%
%% isbn10_code_test() tests isbn10_code().
%
%  Licensing:
%
%    This code is distributed under the MIT license. 
%
%  Modified:
%
%    31 May 2026
%
%  Author:
%
%    John Burkardt
%
  addpath ( '../isbn10_code' );

  timestamp ( );
  fprintf ( 1, '\n' );
  fprintf ( 1, 'isbn10_code_test():\n' );
  fprintf ( 1, '  MATLAB/Octave version %s\n', version ( ) );
  fprintf ( 1, '  Test isbn10_code().\n' );

  ch_is_digit_test ( );
  ch_is_isbn_digit_test ( );
  ch_to_digit_test ( );
  i4_to_isbn_digit_test ( );
  i4vec_print_test ( );
  isbn_check_digit_calculate_test ( );
  isbn_digit_to_i4_test ( );
  isbn_is_valid_test ( );
  s_to_digits_test ( );
  s_to_isbn_digits_test ( );
%
%  Terminate.
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'isbn10_code_test():\n' );
  fprintf ( 1, '  Normal end of execution.\n' );
  fprintf ( 1, '\n' );
  timestamp ( );

  rmpath ( '../isbn10_code' );

  return
end
function timestamp ( )

%*****************************************************************************80
%
%% timestamp() prints the current YMDHMS date as a timestamp.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    14 February 2003
%
%  Author:
%
%    John Burkardt
%
  t = now;
  c = datevec ( t );
  s = datestr ( c, 0 );
  fprintf ( 1, '%s\n', s );

  return
end

