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5b2abdfb | 1 | .\" Copyright (c) 1990, 1991, 1993 |
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2 | .\" The Regents of the University of California. All rights reserved. |
3 | .\" | |
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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 | .\" | |
e9ce8d39 A |
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. | |
e9ce8d39 A |
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 | .\" | |
5b2abdfb | 32 | .\" @(#)strchr.3 8.2 (Berkeley) 4/19/94 |
1f2f436a | 33 | .\" $FreeBSD: src/lib/libc/string/strchr.3,v 1.14 2009/04/07 13:42:53 trasz Exp $ |
e9ce8d39 | 34 | .\" |
5b2abdfb A |
35 | .Dd April 19, 1994 |
36 | .Dt STRCHR 3 | |
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37 | .Os |
38 | .Sh NAME | |
3d9156a7 | 39 | .Nm strchr , strrchr |
5b2abdfb | 40 | .Nd locate character in string |
e9ce8d39 A |
41 | .Sh LIBRARY |
42 | .Lb libc | |
43 | .Sh SYNOPSIS | |
5b2abdfb | 44 | .In string.h |
3d9156a7 | 45 | .Ft "char *" |
5b2abdfb | 46 | .Fn strchr "const char *s" "int c" |
3d9156a7 A |
47 | .Ft "char *" |
48 | .Fn strrchr "const char *s" "int c" | |
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49 | .Sh DESCRIPTION |
50 | The | |
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51 | .Fn strchr |
52 | function locates the first occurrence of | |
9385eb3d | 53 | .Fa c |
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54 | (converted to a |
55 | .Vt char ) | |
5b2abdfb | 56 | in the string pointed to by |
9385eb3d | 57 | .Fa s . |
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58 | The terminating null character is considered part of the string; |
59 | therefore if | |
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60 | .Fa c |
61 | is | |
62 | .Ql \e0 , | |
3d9156a7 | 63 | the functions locate the terminating |
5b2abdfb | 64 | .Ql \e0 . |
3d9156a7 A |
65 | .Pp |
66 | The | |
67 | .Fn strrchr | |
68 | function is identical to | |
69 | .Fn strchr | |
70 | except it locates the last occurrence of | |
71 | .Fa c . | |
e9ce8d39 | 72 | .Sh RETURN VALUES |
3d9156a7 | 73 | The functions |
5b2abdfb | 74 | .Fn strchr |
3d9156a7 A |
75 | and |
76 | .Fn strrchr | |
77 | return a pointer to the located character, or | |
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78 | .Dv NULL |
79 | if the character does not appear in the string. | |
e9ce8d39 | 80 | .Sh SEE ALSO |
5b2abdfb | 81 | .Xr memchr 3 , |
1f2f436a | 82 | .Xr memmem 3 , |
5b2abdfb A |
83 | .Xr strcspn 3 , |
84 | .Xr strpbrk 3 , | |
5b2abdfb A |
85 | .Xr strsep 3 , |
86 | .Xr strspn 3 , | |
87 | .Xr strstr 3 , | |
1f2f436a A |
88 | .Xr strtok 3 , |
89 | .Xr wcschr 3 | |
5b2abdfb | 90 | .Sh STANDARDS |
3d9156a7 | 91 | The functions |
5b2abdfb | 92 | .Fn strchr |
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93 | and |
94 | .Fn strrchr | |
95 | conform to | |
5b2abdfb | 96 | .St -isoC . |