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.\" @(#)strchr.3 8.2 (Berkeley) 4/19/94 37.\" $FreeBSD$ 38.\" 39.Dd April 19, 1994 40.Dt STRCHR 3 41.Os 42.Sh NAME 43.Nm strchr , strrchr 44.Nd locate character in string 45.Sh LIBRARY 46.Lb libc 47.Sh SYNOPSIS 48.In string.h 49.Ft "char *" 50.Fn strchr "const char *s" "int c" 51.Ft "char *" 52.Fn strrchr "const char *s" "int c" 53.Sh DESCRIPTION 54The 55.Fn strchr 56function locates the first occurrence of 57.Fa c 58(converted to a 59.Vt char ) 60in the string pointed to by 61.Fa s . 62The terminating null character is considered part of the string; 63therefore if 64.Fa c 65is 66.Ql \e0 , 67the functions locate the terminating 68.Ql \e0 . 69.Pp 70The 71.Fn strrchr 72function is identical to 73.Fn strchr 74except it locates the last occurrence of 75.Fa c . 76.Sh RETURN VALUES 77The functions 78.Fn strchr 79and 80.Fn strrchr 81return a pointer to the located character, or 82.Dv NULL 83if the character does not appear in the string. 84.Sh SEE ALSO 85.Xr memchr 3 , 86.Xr strcspn 3 , 87.Xr strpbrk 3 , 88.Xr strsep 3 , 89.Xr strspn 3 , 90.Xr strstr 3 , 91.Xr strtok 3 92.Sh STANDARDS 93The functions 94.Fn strchr 95and 96.Fn strrchr 97conform to 98.St -isoC . 99