1STRCAT(3P)                 POSIX Programmer's Manual                STRCAT(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       strcat — concatenate two strings
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SYNOPSIS

16       #include <string.h>
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18       char *strcat(char *restrict s1, const char *restrict s2);
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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  strcat()  function shall append a copy of the string pointed to by
27       s2 (including the terminating NUL character) to the end of  the  string
28       pointed  to by s1.  The initial byte of s2 overwrites the NUL character
29       at the end of s1.  If copying takes place between objects that overlap,
30       the behavior is undefined.
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RETURN VALUE

33       The  strcat()  function shall return s1; no return value is reserved to
34       indicate an error.
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ERRORS

37       No errors are defined.
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39       The following sections are informative.
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EXAMPLES

42       None.
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APPLICATION USAGE

45       This version is aligned with the ISO C standard; this does  not  affect
46       compatibility  with XPG3 applications. Reliable error detection by this
47       function was never guaranteed.
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RATIONALE

50       None.
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FUTURE DIRECTIONS

53       None.
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SEE ALSO

56       strncat()
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58       The Base Definitions volume of POSIX.1‐2008, <string.h>
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61       Portions of this text are reprinted and reproduced in  electronic  form
62       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
63       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
64       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
65       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
66       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
67       event of any discrepancy between this version and the original IEEE and
68       The  Open Group Standard, the original IEEE and The Open Group Standard
69       is the referee document. The original Standard can be  obtained  online
70       at http://www.unix.org/online.html .
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72       Any  typographical  or  formatting  errors that appear in this page are
73       most likely to have been introduced during the conversion of the source
74       files  to  man page format. To report such errors, see https://www.ker‐
75       nel.org/doc/man-pages/reporting_bugs.html .
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79IEEE/The Open Group                  2013                           STRCAT(3P)
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