al_fungetc(3)al_fungetc(3)NAMEal_fungetc - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
int al_fungetc(ALLEGRO_FILE *f, int c)
DESCRIPTION
Ungets a single byte from a file. Pushed-back bytes are not written to
the file, only made available for subsequent reads, in reverse order.
The number of pushbacks depends on the backend. The standard I/O back‐
end only guarantees a single pushback; this depends on the libc imple‐
mentation.
For backends that follow the standard behavior, the pushback buffer
will be cleared after any seeking or writing; also calls to al_fseek(3)
and al_ftell(3) are relative to the number of pushbacks. If a pushback
causes the position to become negative, the behavior of al_fseek(3) and
al_ftell(3) are undefined.
SEE ALSOal_fgetc(3), al_get_errno(3)Allegro reference manualal_fungetc(3)