/**
 * @file future_4.cpp
 * @brief packaged_task
*/

#include <future>
#include <iostream>

using namespace std;

int fun(int x, int y)
{
	for (auto i = x; i < y; ++i)
	{
		cout << i << endl;
	}
	return y - x;
}

int main()
{
	packaged_task<int(int, int)> task(fun);

	future<int> fut = task.get_future();
	task(0, 10);
	cout << "value = " << fut.get() << endl;

	task.reset();
	fut = task.get_future();
	thread t(move(task), 0, 10);
	t.join();

	return 0;
}