words_in (string, (pchar word, int length) {
                                             ...
                                           });

words_in (string, (int index, pchar word, int length) {
                                                        ...
                                                      });

words_in (string, spaces, (pchar word, int length) {
                                                     ...
                                                   });

words_in (string, spaces, (int index, pchar word, int length) {
                                                                ...
                                                              });
