Using chrono datetime utilities from C++11

chrono_timer.cpp

#include <chrono>
#include <iostream>
#include <thread>

int main()
{
    // time now
    auto start = std::chrono::high_resolution_clock::now();

    std::this_thread::sleep_for(std::chrono::seconds(5));

    // time after
    auto end = std::chrono::high_resolution_clock::now();

    // display the difference
    auto difference = std::chrono::duration_cast<std::chrono::seconds>(end - start).count();
    std::cout << "seconds past: " << difference;
}