Как сохранить в файл русские символы из wstring?

void save(std::vector<std::wstring> &data, const std::string &name) {
     std::wofstream file{name};
     for (const auto& d : data) {
         file << d << std::endl;
         std::wcout << d << std::endl;
     }
     file.close(); 
}

int main1() {
     std::wstring s{L"Нажмите START"};
     std::wcout << s << std::endl;
     return 0; 
}

std::wcout.imbue(std::locale("rus.855"));

    file.imbue(std::locale(file.getloc(), new std::codecvt_utf8_utf16<wchar_t, 0x10ffff, std::codecvt_mode(std::consume_header|std::generate_header)>));

///----------------------------------------------------------------------------|
/// Исходник стандартно: в utf-8
///----------------------------------------------------------------------------:
#include <Windows.h>
#include <string>
#include <fstream>
#include <iostream>
#include <vector>
 
#include <fcntl.h>
#include <io.h>
 
void save(std::vector<std::wstring>& data, const std::string &name)
{
    std::ofstream file{name, std::ios::binary};
    for (const auto& d : data)
    {
        for (const auto& c : d)
        {   file.write((char*)(&c), 2);
            std::wcout << c;
        }
    }
}
 
int main()
{   setlocale(0,"");
    std::vector<std::wstring> data = {L"zЯЯЯz\n", L"zЮЮЮz\n"};
    save(data, "data.txt");
}

///----------------------------------------------------------------------------|
/// C++17
///----------------------------------------------------------------------------:
#include <string>
#include <vector>
#include <fstream>
#include <iostream>
 
void save(std::vector<std::wstring>& data, const std::string &name)
{
    std::ofstream file{name, std::ios::binary};
    for (const auto& d : data)
    {   file.write((char*)(d.data()), d.size()*2);
        std::wcout << d;
    }
}
 
int main()
{   setlocale(0,"");
    std::vector<std::wstring> data = {L"1ЯЯЯz\n", L"2ЮЮЮz...\n"};
    save(data, "data.txt");
}

char conv(iconv_t &ic, char16_t wc) {
    char *b{reinterpret_cast<char*>(&wc)};
    char c{};
    char *o{&c};
    size_t in{2};
    size_t out{1};
    errno = 0;
    size_t k{iconv(ic, &b, &in, &o, &out)};
    if(k == (size_t)-1 && errno) throw std::runtime_error("Ошибка");
    return c;
}

iconv_t ic{iconv_open("UTF-16", "UTF-8")};
//...
char16_t wc{readWChar(file)};
char c{conv(ic, wc)};
//...
iconv_close(ic);

    iconv_t ic{iconv_open("UTF-8", "UTF-16")};