al_get_current_directory - Allegro 5 API

       Returns  the path to the current working directory, or NULL on failure.  The returned path is dynamically
       allocated and must be destroyed with al_free(3alleg5).

       Allegro’s errno is filled in to indicate the error if there is a  failure.   This  function  may  not  be
       implemented on some (virtual) filesystems.

       al_get_current_directory - Allegro 5 API

al_get_errno(3alleg5), al_free(3alleg5)

Allegro reference manual                                                       al_get_current_directory(3alleg5)

              #include <allegro5/allegro.h>

              char *al_get_current_directory(void)