al_ferror - Man Page

#include <allegro5/allegro.h>

int al_ferror(ALLEGRO_FILE *f)

Returns non-zero if the error indicator is set on the given file, i.e. there was some sort of previous error. The error code may be system or file interface specific.

al_feof(3), al_fclearerr(3), al_ferrmsg(3)