strncat(3p) — Linux manual page

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

PROLOG

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

NAME

       strncat — concatenate a string with part of another

SYNOPSIS

       #include <string.h>

       char *strncat(char *restrict s1, const char *restrict s2, size_t n);

DESCRIPTION

       The functionality described on this reference page is aligned
       with the ISO C standard. Any conflict between the requirements
       described here and the ISO C standard is unintentional. This
       volume of POSIX.1‐2017 defers to the ISO C standard.

       The strncat() function shall append not more than n bytes (a NUL
       character and bytes that follow it are not appended) from the
       array pointed to by s2 to the end of the string pointed to by s1.
       The initial byte of s2 overwrites the NUL character at the end of
       s1.  A terminating NUL character is always appended to the
       result. If copying takes place between objects that overlap, the
       behavior is undefined.

RETURN VALUE

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

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       strcat(3p)

       The Base Definitions volume of POSIX.1‐2017, string.h(0p)

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any
       discrepancy between this version and the original IEEE and The
       Open Group Standard, the original IEEE and The Open Group
       Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page
       are most likely to have been introduced during the conversion of
       the source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group               2017                       STRNCAT(3P)

Pages that refer to this page: string.h(0p), strcat(3p)

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