al_fprintf - Allegro 5 API

       Writes to a file with stdio “printf”-like formatting.  Returns the number of bytes written, or a negative
       number on error.

       al_fprintf - Allegro 5 API

al_vfprintf(3alleg5)

Allegro reference manual                                                                     al_fprintf(3alleg5)

              #include <allegro5/allegro.h>

              int al_fprintf(ALLEGRO_FILE *pfile, const char *format, ...)