UNGETC(3S)              GENIX Programmer's Manual              UNGETC(3S)



      NAME
           ungetc - push character back into input stream

      SYNOPSIS
           #include <stdio.h>

           ungetc(c, stream)
           FILE *stream;

      DESCRIPTION
           Ungetc pushes the character c back on an input stream.  That charac-
           ter  will  be returned by the next getc call on that stream.  Ungetc
           returns c.

           One character of pushback is guaranteed provided something has  been
           read  from the stream and the stream is actually buffered.  Attempts
           to push EOF are rejected.

           Fseek(3) erases all memory of pushed back characters.

      SEE ALSO
           getc(3), setbuf(3), fseek(3)

      DIAGNOSTICS
           Ungetc returns EOF if it can't push a character back.






























      Printed 11/16/83                                                        1