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 LIBRARY 46.Lb libc 47.Sh SYNOPSIS 48.Fd #include <stdio.h> 49.Ft int 50.Fn fclose "FILE *stream" 51.Sh DESCRIPTION 52The 53.Fn fclose 54function 55dissociates the named 56.Fa stream 57from its underlying file or set of functions. 58If the stream was being used for output, any buffered data is written 59first, using 60.Xr fflush 3 . 61.Sh RETURN VALUES 62Upon successful completion 0 is returned. 63Otherwise, 64.Dv EOF 65is returned and the global variable 66.Va errno 67is set to indicate the error. 68In either case no further access to the stream is possible. 69.Sh ERRORS 70The 71.Fn fclose 72function 73may also fail and set 74.Va errno 75for any of the errors specified for the routines 76.Xr close 2 77or 78.Xr fflush 3 . 79.Sh NOTES 80.Fn fclose 81does not handle NULL arguments; they will result in a segmentation 82violation. 83This is intentional - it makes it easier to make sure programs written 84under 85.Fx 86are bug free. 87This behaviour is an implementation detail, and programs should not 88rely upon it. 89.Sh SEE ALSO 90.Xr close 2 , 91.Xr fflush 3 , 92.Xr fopen 3 , 93.Xr setbuf 3 94.Sh STANDARDS 95The 96.Fn fclose 97function 98conforms to 99.St -ansiC . 100