al_draw_textf - Allegro 5 API

       Formatted  text  output,  using  a printf() style format string.  All parameters have the same meaning as
       with al_draw_text(3alleg5) otherwise.

       al_draw_textf - Allegro 5 API

al_draw_text(3alleg5), al_draw_ustr(3alleg5)

Allegro reference manual                                                                  al_draw_textf(3alleg5)

              #include <allegro5/allegro_font.h>

              void al_draw_textf(const ALLEGRO_FONT *font, ALLEGRO_COLOR color,
                 float x, float y, int flags,
                 const char *format, ...)