[C++] Unikodowe znaki w konsoli (Windows)

#include "windows.h"
#include <string>

const WCHAR PIERWIASTEK = 8730;

void writeUnicode( PCWSTR sText )
{
    int bufferSize = WideCharToMultiByte( CP_UTF8, 0, sText, - 1, NULL, 0, NULL, NULL );
    char * m = new char[ bufferSize ];
    WideCharToMultiByte( CP_UTF8, 0, sText, - 1, m, bufferSize, NULL, NULL );
    wprintf( L"%S", m );
    delete[] m;
}

void writeUnicode( WCHAR cChar )
{
    WCHAR sText[ 2 ] = { cChar };
    writeUnicode( sText );
}

int main()
{
   
    UINT oldcp =::GetConsoleOutputCP();
    ::SetConsoleOutputCP( CP_UTF8 );
   
    writeUnicode( L"Polskie znaki: ąćęłóńśźż\n" );
    writeUnicode( PIERWIASTEK );
   
    ::SetConsoleOutputCP( oldcp );
    return 0;
}