std::chrono example - getting unix timestamp

chrono-unixtimestamp.cpp

#include <chrono>
#include <ctime>
#include <iostream>

int main() {

  // std::chrono only
  auto now = std::chrono::system_clock::now();
  std::cout << "std::chrono only: " << std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch()).count() << std::endl;

  std::cout << "with std::ctime: " << std::chrono::seconds(std::time(NULL)).count() << std::endl;
}

@Spixmaster, this snippet comes from an article: http://antoniak.in/blog/2017/04/14/managing-time-std-chrono/. You may find it interesting.