1 May 2002
gfs_pio_ungetc 3 Gfarm
gfs_pio_ungetc push a character back

    #include <gfarm/gfarm.h>

`int gfs_pio_ungetc` GFS_File gf int c

## DESCRIPTION

`gfs_pio_ungetc()` pushes a character c back to the file gf. `gfs_pio_ungetc()` is needed to follow `gfs_pio_getc(3)`.

## RETURN VALUES

`EOF`

  `gfs_pio_ungetc()` does not follow `gfs_pio_getc(3)`.

Others

  The function terminated successfully.

## SEE ALSO

gfs_pio_create 3, gfs_pio_error 3, gfs_pio_getc 3, gfs_pio_open 3