NAME

       al_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 backend only guarantees a single push‐
       back; this depends on the libc implementation.

       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(3al‐
       leg5) are undefined.

SEE ALSO

       al_fgetc(3alleg5), al_get_errno(3alleg5)

Allegro reference manual                                                                     al_fungetc(3alleg5)