wcscpy(S-osr5)

wcscpy, wcsncpy -- copy a wide character string

Syntax

cc . . . -lc

#include <wchar.h>

wchar_t *wcscpy(wchar_t *ws1, const wchar_t *ws2);
wchar_t *wcsncpy(wchar_t *ws1, const wchar_t *ws2, size_t n);

Description

wcscpy(S-osr5) puts a copy of the wide character string pointed to by ws2 into the array pointed to by ws1. The terminating null wide-character code is also copied.

wcsncpy(S-osr5) copies the first n wide-character codes in the array pointed to by ws2 to the array pointed to by ws1. The result is not null terminated if there is no null wide character in these first n wide-character codes. If ws2 points to a string of no more than n wide-character codes, the string is copied to the array ws1 and the remaining elements in the array are filled with null wide-character codes until a total of n wide-character codes are written.

If copying takes place in overlapping memory blocks, the behavior is undefined.

Return values

wcscpy( ) and wcsncpy( ) return ws1; no error return value is reserved.

Diagnostics

The value of errno is undefined.

Warning

Character movement is performed differently in different implementations. This is a cause for unexpected results in moves between overlapping memory blocks.

Standards conformance

wcscpy( ) and wcsncpy( ) are conformant with:
X/Open CAE Specification, System Interfaces and Headers, Issue 4, 1992.