Hello Multithreading World (C++ Thread)

hello_multithreading_world.cc

#include <iostream>
#include <string>
#include <system_error>
#include <thread>

class BackgroundTask {
public:
  void operator()() const {
    std::cout << "Hello Multithreading World" << std::endl;
  }
};

int main() {
  try {
    BackgroundTask task;
    std::thread myThread(task);

    myThread.join();
  } catch (std::system_error const &error) {
    std::cout << error.what() << std::endl;
    return -1;
  }

  return 0;
}