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.TH al_fungetc 3 "" "Allegro reference manual"
.SH NAME
.PP
al_fungetc \- Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include\ <allegro5/allegro.h>
int\ al_fungetc(ALLEGRO_FILE\ *f,\ int\ c)
\f[]
.fi
.SH DESCRIPTION
.PP
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.
.PP
The number of pushbacks depends on the backend.
The standard I/O backend only guarantees a single pushback; this depends
on the libc implementation.
.PP
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.
.SH SEE ALSO
.PP
al_fgetc(3), al_get_errno(3)
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