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.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)strchr.3 8.2 (Berkeley) 4/19/94 33.\" $FreeBSD$ 34.\" 35.Dd April 19, 1994 36.Dt STRCHR 3 37.Os 38.Sh NAME 39.Nm strchr , strrchr 40.Nd locate character in string 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In string.h 45.Ft "char *" 46.Fn strchr "const char *s" "int c" 47.Ft "char *" 48.Fn strrchr "const char *s" "int c" 49.Sh DESCRIPTION 50The 51.Fn strchr 52function locates the first occurrence of 53.Fa c 54(converted to a 55.Vt char ) 56in the string pointed to by 57.Fa s . 58The terminating null character is considered part of the string; 59therefore if 60.Fa c 61is 62.Ql \e0 , 63the functions locate the terminating 64.Ql \e0 . 65.Pp 66The 67.Fn strrchr 68function is identical to 69.Fn strchr 70except it locates the last occurrence of 71.Fa c . 72.Sh RETURN VALUES 73The functions 74.Fn strchr 75and 76.Fn strrchr 77return a pointer to the located character, or 78.Dv NULL 79if the character does not appear in the string. 80.Sh SEE ALSO 81.Xr memchr 3 , 82.Xr memmem 3 , 83.Xr strcspn 3 , 84.Xr strpbrk 3 , 85.Xr strsep 3 , 86.Xr strspn 3 , 87.Xr strstr 3 , 88.Xr strtok 3 89.Sh STANDARDS 90The functions 91.Fn strchr 92and 93.Fn strrchr 94conform to 95.St -isoC . 96