al_get_config_value - Allegro 5 API

       Gets  a pointer to an internal character buffer that will only remain valid as long as the ALLEGRO_CONFIG
       structure is not destroyed.  Copy the value if you need a copy.  The section can be NULL or  “”  for  the
       global section.  Returns NULL if the section or key do not exist.

       al_get_config_value - Allegro 5 API

al_set_config_value(3alleg5)

Allegro reference manual                                                            al_get_config_value(3alleg5)

              #include <allegro5/allegro.h>

              const char *al_get_config_value(const ALLEGRO_CONFIG *config,
                 const char *section, const char *key)