]>
Commit | Line | Data |
---|---|---|
fea681da MK |
1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
2 | .\" | |
93015253 | 3 | .\" %%%LICENSE_START(VERBATIM) |
fea681da MK |
4 | .\" Permission is granted to make and distribute verbatim copies of this |
5 | .\" manual provided the copyright notice and this permission notice are | |
6 | .\" preserved on all copies. | |
7 | .\" | |
8 | .\" Permission is granted to copy and distribute modified versions of this | |
9 | .\" manual under the conditions for verbatim copying, provided that the | |
10 | .\" entire resulting derived work is distributed under the terms of a | |
11 | .\" permission notice identical to this one. | |
c13182ef | 12 | .\" |
fea681da MK |
13 | .\" Since the Linux kernel and libraries are constantly changing, this |
14 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
15 | .\" responsibility for errors or omissions, or for damages resulting from | |
16 | .\" the use of the information contained herein. The author(s) may not | |
17 | .\" have taken the same level of care in the production of this manual, | |
18 | .\" which is licensed free of charge, as they might when working | |
19 | .\" professionally. | |
c13182ef | 20 | .\" |
fea681da MK |
21 | .\" Formatted or processed versions of this manual, if unaccompanied by |
22 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 23 | .\" %%%LICENSE_END |
fea681da MK |
24 | .\" |
25 | .\" References consulted: | |
26 | .\" Linux libc source code | |
27 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
28 | .\" 386BSD man pages | |
29 | .\" Modified Sat Jul 24 18:08:52 1993 by Rik Faith (faith@cs.unc.edu) | |
30 | .\" Modified 2001-08-31, aeb | |
31 | .\" | |
460495ca | 32 | .TH STRCMP 3 2015-08-08 "" "Linux Programmer's Manual" |
fea681da MK |
33 | .SH NAME |
34 | strcmp, strncmp \- compare two strings | |
35 | .SH SYNOPSIS | |
36 | .nf | |
37 | .B #include <string.h> | |
68e4db0a | 38 | .PP |
fea681da | 39 | .BI "int strcmp(const char *" s1 ", const char *" s2 ); |
68e4db0a | 40 | .PP |
fea681da MK |
41 | .BI "int strncmp(const char *" s1 ", const char *" s2 ", size_t " n ); |
42 | .fi | |
43 | .SH DESCRIPTION | |
60a90ecd MK |
44 | The |
45 | .BR strcmp () | |
46d8df8e MK |
46 | function compares the two strings |
47 | .I s1 | |
48 | and | |
49 | .IR s2 . | |
cf21daa8 | 50 | The locale is not taken into account (for a locale-aware comparison, see |
7e1a3cfb | 51 | .BR strcoll (3)). |
1c44bd5b | 52 | It returns an integer less than, equal to, or greater |
46d8df8e MK |
53 | than zero if |
54 | .I s1 | |
55 | is found, respectively, to be less than, | |
56 | to match, or be greater than | |
57 | .IR s2 . | |
fea681da | 58 | .PP |
60a90ecd MK |
59 | The |
60 | .BR strncmp () | |
33a0ccb2 | 61 | function is similar, except it compares |
0647fa15 | 62 | only the first (at most) |
51700fd7 | 63 | .IR n |
46d8df8e MK |
64 | bytes of |
65 | .I s1 | |
66 | and | |
67 | .IR s2 . | |
47297adb | 68 | .SH RETURN VALUE |
60a90ecd MK |
69 | The |
70 | .BR strcmp () | |
71 | and | |
72 | .BR strncmp () | |
73 | functions return an integer | |
46d8df8e MK |
74 | less than, equal to, or greater than zero if |
75 | .I s1 | |
76 | (or the first | |
77 | .I n | |
78 | bytes thereof) is found, respectively, to be less than, to | |
79 | match, or be greater than | |
80 | .IR s2 . | |
b5afa808 | 81 | .SH ATTRIBUTES |
c091a75f PH |
82 | For an explanation of the terms used in this section, see |
83 | .BR attributes (7). | |
84 | .TS | |
85 | allbox; | |
86 | lbw19 lb lb | |
87 | l l l. | |
88 | Interface Attribute Value | |
89 | T{ | |
90 | .BR strcmp (), | |
b5afa808 | 91 | .BR strncmp () |
c091a75f PH |
92 | T} Thread safety MT-Safe |
93 | .TE | |
47297adb | 94 | .SH CONFORMING TO |
ca362734 | 95 | POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. |
47297adb | 96 | .SH SEE ALSO |
fea681da MK |
97 | .BR bcmp (3), |
98 | .BR memcmp (3), | |
99 | .BR strcasecmp (3), | |
100 | .BR strcoll (3), | |
d095200e | 101 | .BR string (3), |
1709027c | 102 | .BR strncasecmp (3), |
a9cbb6cf | 103 | .BR strverscmp (3), |
1709027c MK |
104 | .BR wcscmp (3), |
105 | .BR wcsncmp (3) |