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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.\"
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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
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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.\"
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36.\" @(#)strlen.3 8.1 (Berkeley) 6/4/93
37.\" $FreeBSD: src/lib/libc/string/strlen.3,v 1.6 2001/10/01 16:09:00 ru Exp $
e9ce8d39 38.\"
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39.Dd June 4, 1993
40.Dt STRLEN 3
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41.Os
42.Sh NAME
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43.Nm strlen
44.Nd find length of string
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45.Sh LIBRARY
46.Lb libc
47.Sh SYNOPSIS
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48.In string.h
49.Ft size_t
50.Fn strlen "const char *s"
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51.Sh DESCRIPTION
52The
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53.Fn strlen
54function
55computes the length of the string
56.Fa s .
e9ce8d39 57.Sh RETURN VALUES
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58The
59.Fn strlen
60function
61returns
62the number of characters that precede the
63terminating
64.Dv NUL
65character.
e9ce8d39 66.Sh SEE ALSO
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67.Xr string 3
68.Sh STANDARDS
e9ce8d39 69The
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70.Fn strlen
71function
72conforms to
73.St -isoC .