\" Copyright (c) 1990, 1991, 1993
\" The Regents of the University of California. All rights reserved.
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\" 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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\" 3. Neither the name of the University nor the names of its contributors
\" may be used to endorse or promote products derived from this software
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\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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\" from: @(#)strcmp.3 8.1 (Berkeley) 6/4/93
\" $NetBSD: strcmp.3,v 1.14 2016/07/14 17:09:03 abhinav Exp $
\"
Dd June 4, 1993
Dt STRCMP 3
Os
Sh NAME
Nm strcmp ,
Nm strncmp
Nd compare strings
Sh LIBRARY
Lb libc
Sh SYNOPSIS
In string.h
Ft int
Fn strcmp "const char *s1" "const char *s2"
Ft int
Fn strncmp "const char *s1" "const char *s2" "size_t len"
Sh DESCRIPTION
The
Fn strcmp
and
Fn strncmp
functions
lexicographically compare the nul-terminated strings
Fa s1
and
Fa s2 .
Sh RETURN VALUES
The
Fn strcmp
and
Fn strncmp
functions return an integer greater than, equal to, or less than 0, according
to whether the string
Fa s1
is greater than, equal to, or less than the string
Fa s2 .
The comparison is done using unsigned characters, so that
Ql \e200
is greater than
Ql \e0 .
Pp
The
Fn strncmp
function compares not more than
Fa len
characters.
Sh SEE ALSO
Xr bcmp 3 ,
Xr memcmp 3 ,
Xr strcasecmp 3 ,
Xr strcoll 3 ,
Xr strxfrm 3
Sh STANDARDS
The
Fn strcmp
and
Fn strncmp
functions
conform to
St -ansiC .
Sh NOTES
If
Fa len
is 0,
Fn strncmp
always returns 0.
