1.\" $OpenBSD: fclose.3,v 1.9 2015/11/04 21:30:13 tedu Exp $ 2.\" 3.\" Copyright (c) 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" Chris Torek and the American National Standards Committee X3, 8.\" on Information Processing Systems. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.Dd $Mdocdate: November 4 2015 $ 35.Dt FCLOSE 3 36.Os 37.Sh NAME 38.Nm fclose 39.Nd close a stream 40.Sh SYNOPSIS 41.In stdio.h 42.Ft int 43.Fn fclose "FILE *stream" 44.Sh DESCRIPTION 45The 46.Fn fclose 47function dissociates the named 48.Fa stream 49from its underlying file or set of functions. 50If the stream was being used for output, any buffered data is written 51first, using 52.Xr fflush 3 . 53.Sh RETURN VALUES 54Upon successful completion 0 is returned. 55Otherwise, 56.Dv EOF 57is returned and the global variable 58.Va errno 59is set to indicate the error. 60In either case no further access to the stream is possible. 61.Sh ERRORS 62.Bl -tag -width Er 63.It Bq Er EBADF 64The argument 65.Fa stream 66is not an open stream. 67.El 68.Pp 69The 70.Fn fclose 71function may also fail and set 72.Va errno 73for any of the errors specified for the routines 74.Xr close 2 75or 76.Xr fflush 3 . 77.Sh SEE ALSO 78.Xr close 2 , 79.Xr fflush 3 , 80.Xr fopen 3 , 81.Xr setvbuf 3 82.Sh STANDARDS 83The 84.Fn fclose 85function conforms to 86.St -ansiC . 87.Sh HISTORY 88The 89.Fn fclose 90function first appeared in 91.At v7 . 92