1STRNCAT(3P)                POSIX Programmer's Manual               STRNCAT(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       strncat — concatenate a string with part of another
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SYNOPSIS

16       #include <string.h>
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18       char *strncat(char *restrict s1, const char *restrict s2, size_t n);
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DESCRIPTION

21       The functionality described on this reference page is aligned with  the
22       ISO C  standard.  Any  conflict between the requirements described here
23       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
24       defers to the ISO C standard.
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26       The  strncat() function shall append not more than n bytes (a NUL char‐
27       acter and bytes that follow it are not appended) from the array pointed
28       to  by  s2 to the end of the string pointed to by s1.  The initial byte
29       of s2 overwrites the NUL character at the end of s1.  A terminating NUL
30       character  is  always  appended  to  the result. If copying takes place
31       between objects that overlap, the behavior is undefined.
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RETURN VALUE

34       The strncat() function shall  return  s1;  no  return  value  shall  be
35       reserved to indicate an error.
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ERRORS

38       No errors are defined.
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40       The following sections are informative.
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EXAMPLES

43       None.
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APPLICATION USAGE

46       None.
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RATIONALE

49       None.
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FUTURE DIRECTIONS

52       None.
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SEE ALSO

55       strcat()
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57       The Base Definitions volume of POSIX.1‐2008, <string.h>
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60       Portions  of  this text are reprinted and reproduced in electronic form
61       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
62       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
63       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
64       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
65       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
66       event of any discrepancy between this version and the original IEEE and
67       The Open Group Standard, the original IEEE and The Open Group  Standard
68       is  the  referee document. The original Standard can be obtained online
69       at http://www.unix.org/online.html .
70
71       Any typographical or formatting errors that appear  in  this  page  are
72       most likely to have been introduced during the conversion of the source
73       files to man page format. To report such errors,  see  https://www.ker‐
74       nel.org/doc/man-pages/reporting_bugs.html .
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78IEEE/The Open Group                  2013                          STRNCAT(3P)
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