al_get_first_config_entry - Allegro 5 API

       Returns  the  name  of  the  first key in the given section in the given config or NULL if the section is
       empty.  The iterator works like the one for al_get_first_config_section(3alleg5).

       The returned string and the iterator are only  valid  as  long  as  no  change  is  made  to  the  passed
       ALLEGRO_CONFIG(3alleg5).

       al_get_first_config_entry - Allegro 5 API

al_get_next_config_entry(3alleg5)

Allegro reference manual                                                      al_get_first_config_entry(3alleg5)

              #include <allegro5/allegro.h>

              char const *al_get_first_config_entry(ALLEGRO_CONFIG const *config,
                 char const *section, ALLEGRO_CONFIG_ENTRY **iterator)