chrono

#include <iostream>
#include <chrono>

using namespace std;

int main()
{
  typedef chrono::duration<unsigned long, milli> milliseconds_t;
  typedef chrono::duration<unsigned long> seconds_t;
  milliseconds_t Milliseconds(11111);
  seconds_t Seconds(chrono::duration_cast<seconds_t> (Milliseconds));
  cout << Milliseconds.count() << endl;
  cout << Seconds.count() << endl;
}