#include <clocale>
#include <codecvt>
#include <iostream>
#include <string>

std::locale utf8loc(std::locale(), new std::codecvt_utf8<wchar_t>);
using namespace std;

void printHello(wstring name) noexcept {
	wcout << L"Hello, " << name << L"!" << endl;
}

int main(int argc, char **argv) {
	setlocale(LC_ALL, "en_US.UTF-8");
	wcout.imbue(utf8loc);
	wcin.imbue(utf8loc);

	printHello(L"Fred");
	printHello(L"Wilma");
	printHello(L"Barney");
	printHello(L"Betty");
	return 0;
}