al_ustr_append_cstr - Allegro 5 API

       Append C-style string s to the end of us.

       Returns true on success, false on error.

       al_ustr_append_cstr - Allegro 5 API

al_ustr_append(3alleg5)

Allegro reference manual                                                            al_ustr_append_cstr(3alleg5)

              #include <allegro5/allegro.h>

              bool al_ustr_append_cstr(ALLEGRO_USTR *us, const char *s)