1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek and the American National Standards Committee X3, 6.\" on Information Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. All advertising materials mentioning features or use of this software 17.\" must display the following acknowledgement: 18.\" This product includes software developed by the University of 19.\" California, Berkeley and its contributors. 20.\" 4. Neither the name of the University nor the names of its contributors 21.\" may be used to endorse or promote products derived from this software 22.\" without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)fclose.3 8.1 (Berkeley) 6/4/93 37.\" $FreeBSD$ 38.\" 39.Dd June 4, 1993 40.Dt FCLOSE 3 41.Os 42.Sh NAME 43.Nm fclose 44.Nd close a stream 45.Sh SYNOPSIS 46.Fd #include <stdio.h> 47.Ft int 48.Fn fclose "FILE *stream" 49.Sh DESCRIPTION 50The 51.Fn fclose 52function 53dissociates the named 54.Fa stream 55from its underlying file or set of functions. 56If the stream was being used for output, any buffered data is written 57first, using 58.Xr fflush 3 . 59.Sh RETURN VALUES 60Upon successful completion 0 is returned. 61Otherwise, 62.Dv EOF 63is returned and the global variable 64.Va errno 65is set to indicate the error. 66In either case no further access to the stream is possible. 67.Sh ERRORS 68The 69.Fn fclose 70function 71may 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 NOTES 78.Fn fclose 79does not handle NULL arguments; they will result in a segmentation 80violation. 81This is intentional - it makes it easier to make sure programs written 82under FreeBSD are bug free. 83This behaviour is an implementation detail, and programs should not 84rely upon it. 85.Sh SEE ALSO 86.Xr close 2 , 87.Xr fflush 3 , 88.Xr fopen 3 , 89.Xr setbuf 3 90.Sh STANDARDS 91The 92.Fn fclose 93function 94conforms to 95.St -ansiC . 96