.\" Copyright (c) 1990, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek and the American National Standards Committee X3,
.\" on Information Processing Systems.
.\"
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.\" modification, are permitted provided that the following conditions
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.\"    notice, this list of conditions and the following disclaimer in the
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.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
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.\"     @(#)strchr.3	8.2 (Berkeley) 4/19/94
.\" %FreeBSD: src/lib/libc/string/strchr.3,v 1.4.2.4 2001/12/14 18:33:59 ru Exp %
.\"
.\" $FreeBSD$
.\"
.Dd April 19, 1994
.Dt STRCHR 3
.Os
.Sh 名称
.Nm strchr
.Nd 文字列中の文字を検索
.Sh ライブラリ
.Lb libc
.Sh 書式
.In string.h
.Ft char *
.Fn strchr "const char *s" "int c"
.Sh 解説
.Fn strchr
関数は、
.Ar s
によって指される文字列の中で最初に出会う文字
.Ar c
を見つけます。終端のヌル文字は、文字列の一部とみなします。
.Fa c
が
.Ql \e0
である場合は、
.Fn strchr
は終端の
.Ql \e0
を見つけます。
.Sh 戻り値
関数
.Fn strchr
は、見つけた文字へのポインタか、
または文字が文字列中に見つからない場合は NULL を返します。
.Sh 関連項目
.Xr memchr 3 ,
.Xr strcspn 3 ,
.Xr strpbrk 3 ,
.Xr strrchr 3 ,
.Xr strsep 3 ,
.Xr strspn 3 ,
.Xr strstr 3 ,
.Xr strtok 3
.Sh 規格
.Fn strchr
関数は、
.St -isoC
に適合しています。