// MT3-Q5

#include <vector>
#include <string>
#include <thread>
#include <future>
#include <functional>
#include <iostream>

using Msgs = std::vector<std::string>;

int main()
{
  Msgs msgs{ "\n  msg #1", "\n  msg #2", "\n  msg #3", "\n  msg #4", "\n  msg #5" };
  
  std::function<void(Msgs)> writeAsync = [](Msgs inMsgs)
  {
    for (auto item : inMsgs)
      std::cout << item;
  };

  std::thread t(writeAsync, msgs);
  std::cout << "\n  started thread";
  t.join();
  std::cout << "\n";

  std::vector<std::future<void>> dones;

  for (auto item : msgs)
  {
    dones.push_back(std::async(std::launch::async, [item]() { std::cout << item; }));
  }

  std::cout << "\n  started one thread for each item";

  for (size_t i=0; i<dones.size(); ++i)
  {
    dones[i].get();
  }
  std::cout << "\n\n";
}