wcpncpy - copy a fixed-size string of wide characters, returning a pointer to
its end
#include <wchar.h>
wchar_t *wcpncpy(wchar_t *dest, const wchar_t *src, size_t n);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
wcpncpy():
- Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
- _GNU_SOURCE
The
wcpncpy() function is the wide-character equivalent of the
stpncpy(3) function. It copies at most
n wide characters from
the wide-character string pointed to by
src, including the terminating
null wide (L'\0'), to the array pointed to by
dest. Exactly
n
wide characters are written at
dest. If the length
wcslen(src)
is smaller than
n, the remaining wide characters in the array pointed
to by
dest are filled with L'\0' characters. If the length
wcslen(src) is greater than or equal to
n, the string pointed to
by
dest will not be L'\0' terminated.
The strings may not overlap.
The programmer must ensure that there is room for at least
n wide
characters at
dest.
wcpncpy() returns a pointer to the last wide character written, that is,
dest+
n-1.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| wcpncpy () |
Thread safety |
MT-Safe |
POSIX.1-2008.
stpncpy(3),
wcsncpy(3)