wcsncat—concatenate part of two wide-character stringsSynopsis
#include <wchar.h>
wchar_t *wcsncat(wchar_t *s1, const wchar_t *s2, size_t n);
Description
The wcsncat function appends not more than n wide-character
codes (a null wide-character code and wide-character codes that follow
it are not appended) from the array pointed to by s2 to the end of
the wide-character string pointed to by s1. The initial
wide-character code of s2 overwrites the null wide-character code
at the end of s1.
A terminating null wide-character code is always appended to the result.
If copying takes place between objects that overlap, the behaviour is
undefined.
Returns
The wcsncat function returns s1; no return value is reserved to
indicate an error.
Portability
wcsncat is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.