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.TH "al_fungetc" "3alleg5" "" "Allegro reference manual" ""
.hy
.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[R]
.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(3alleg5)
and al_ftell(3alleg5) are relative to the number of pushbacks.
If a pushback causes the position to become negative, the behavior of
al_fseek(3alleg5) and al_ftell(3alleg5) are undefined.
.SH SEE ALSO
.PP
al_fgetc(3alleg5), al_get_errno(3alleg5)