std::wcscpy

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Strings library

Null-terminated strings

Byte strings

Multibyte strings

Wide strings

Classes

basic_string

basic_string_view (C++17)

char_traits

Null-terminated wide strings

Functions
Character manipulation
iswalnum iswalpha iswlower iswupper iswdigit iswxdigit iswblank (C++11) wctype iswctype	iswcntrl iswgraph iswspace iswprint iswpunct towlower towupper wctrans towctrans
Conversions to numeric formats
wcstolwcstoll (C++11) wcstoulwcstoull (C++11)	wcstofwcstodwcstold (C++11)(C++11) wcstoimaxwcstouimax (C++11)(C++11)
String manipulation
wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp	wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok
Array manipulation
wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset

Defined in header <cwchar>
wchar_t *wcscpy( wchar_t *dest, const wchar_t *src );

Copies the wide string pointed to by src (including the terminating null wide character) to wide character array pointed to by dest.

If the strings overlap, the behavior is undefined.

Parameters

dest	-	pointer to the wide character array to copy to
src	-	pointer to the null-terminated wide string to copy from

Return value

dest

Example

Run this code

#include <iostream>
#include <cwchar>
#include <memory>
#include <clocale>

int main()
{
    const wchar_t* src = L" means dog";
//  src[0] = L''; // can't modify string literal
    auto dst = std::make_unique<wchar_t[]>(std::wcslen(src)+1); // +1 for the null
    std::wcscpy(dst.get(), src);
    dst[0] = L'';
    std::setlocale(LC_ALL, "en_US.utf8");
    std::wcout.imbue(std::locale(""));
    std::wcout << src << '\n' << dst.get() << '\n';
}

Output:

 means dog
 means dog

See also

wcsncpy	copies a certain amount of wide characters from one string to another (function)
wmemcpy	copies a certain amount of wide characters between two non-overlapping arrays (function)
strcpy	copies one string to another (function)