#include <future>
#include <iostream>
int
find_the_answer_to_ltuae()
{
  return 42;
}

void
do_other_stuff()
{
}

int
main()
{
  std::future<int> the_answer = std::async(find_the_answer_to_ltuae);
  do_other_stuff();
  std::cout << "The answer is " << the_answer.get() << std::endl;
}