Restructing the source layout to make it nicer.

threadtest.cpp

@@ -1,37 +0,0 @@
-#include <chrono>
-#include <future>
-#include <iostream>
-#include <thread>
-using namespace std::chrono_literals;
-
-int main()
-{
-    std::future<int> future = std::async(std::launch::async, []()
-    {
-        std::this_thread::sleep_for(3s);
-        return 8;
-    });
-
-    std::cout << "waiting...\n";
-    std::future_status status;
-
-    do
-    {
-        status = future.wait_for(100ms);
-        switch (status)
-        {
-            case std::future_status::deferred:
-                std::cout << "deferred\n";
-                break;
-            case std::future_status::timeout:
-                std::cout << "timeout\n";
-                break;
-            case std::future_status::ready:
-                std::cout << "ready!\n";
-                break;
-        }
-    }
-    while (status != std::future_status::ready);
-
-    std::cout << "result is " << future.get() << '\n';
-}