al_ustr_find_cstr - Allegro 5 API

       Like al_ustr_find_str(3alleg5) but takes a C-style string for needle.

       al_ustr_find_cstr - Allegro 5 API

al_ustr_find_str(3alleg5), al_ustr_rfind_cstr(3alleg5)

Allegro reference manual                                                              al_ustr_find_cstr(3alleg5)

              #include <allegro5/allegro.h>

              int al_ustr_find_cstr(const ALLEGRO_USTR *haystack, int start_pos,
                 const char *needle)