Allegro 5 api
#include <allegro5/allegro.h> void al_replace_path_component(ALLEGRO_PATH *path, int i, const char *s)
Replace the i\[aq]th directory component by another string. If the index is negative then count from the right, i.e. -1 refers to the last path component. It is an error to pass an index which is out of bounds.
al_insert_path_component(3alleg5), al_remove_path_component(3alleg5)