Unix/Linux Go Back    


NetBSD 6.1.5 - man page for fflush (netbsd section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


FFLUSH(3)			   BSD Library Functions Manual 			FFLUSH(3)

NAME
     fflush, fpurge -- flush a stream

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdio.h>

     int
     fflush(FILE *stream);

     int
     fpurge(FILE *stream);

DESCRIPTION
     The function fflush() forces a write of all buffered data for the given output or update
     stream via the stream's underlying write function.  The open status of the stream is unaf-
     fected.

     If the stream argument is NULL, fflush() flushes all open output streams.

     The function fpurge() erases any input or output buffered in the given stream.  For output
     streams this discards any unwritten output.  For input streams this discards any input read
     from the underlying object but not yet obtained via getc(3); this includes any text pushed
     back via ungetc(3).

RETURN VALUES
     Upon successful completion 0 is returned.	Otherwise, EOF is returned and the global vari-
     able errno is set to indicate the error.

ERRORS
     [EBADF]		stream is not an open stream, or, in the case of fflush(), not a stream
			open for writing.

     The function fflush() may also fail and set errno for any of the errors specified for the
     routine write(2).

SEE ALSO
     write(2), fclose(3), fopen(3), setbuf(3)

STANDARDS
     The fflush() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD					   June 4, 1993 				      BSD
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 04:15 PM.