Locales in C++

#include <exception>
#include <codecvt>

#include <streambuf>
#include <string>
#include <cerrno>
#include <sstream>

using namespace std;

int main()
{
	// Setup  C++ rtl global default locale

	std::locale r1251("Russian_Russia.1251");
	std::locale utf8(std::locale(), new std::codecvt_utf8<wchar_t>);
	std::locale utf16(std::locale(), new std::codecvt_utf16<wchar_t>);
	std::locale::global(r1251);

	// Setup locales for wide streams
	std::wcout.imbue(r1251);

	// For correct io with wcin/wcout disconnect stream from wstream
	std::ios::sync_with_stdio(false);
	wstring str;
	wifstream in1251("C:\\temp\\input_1251.txt");
	in1251.imbue(r1251);
	getline(in1251, str);
	wcout << str << endl;
	
	return 0;
}