#include <future>
#include <iostream>
#include <thread>

int main()
{
	const int N = 2;

	std::future<void> f[N];

	for (auto& i: f)
		i = std::async([]
		{
			while (true)
				std::cout << "hola, soy "
				          << std::this_thread::get_id()
				          << std::endl;
		});
}