al_create_path_for_directory - Allegro 5 API

       This  is  the same as al_create_path(3alleg5), but interprets the passed string as a directory path.  The
       filename component of the returned path will always be empty.

       al_create_path_for_directory - Allegro 5 API

al_create_path(3alleg5), al_destroy_path(3alleg5)

Allegro reference manual                                                   al_create_path_for_directory(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_PATH *al_create_path_for_directory(const char *str)