Sample code of std::tuple

tuple.cpp

#include <iostream>
#include <tuple>
#include <string>

std::tuple<std::string, int>
func(int i)
{
	if (i == 0) {
		return std::tuple<std::string, int>(std::string("hello world"), 0);
	} else {
		return std::tuple<std::string, int>(std::string(""), -1);
	}
}

int main(void)
{
	std::string ret;
	int err;

	std::tie(ret, err) = func(1);
	if (err != 0) {
		std::cout << "ERROR" << std::endl;
		return -1;
	}

	std::cout << "SUCCESS:" << ret << std::endl;

	return 0;
}