Calculate elapsed time in C++ program using chrono with high resolution and precision

ElapsedTime.cpp

#include <iostream> // cout
#include <iomanip> // fixed, setprecision
#include <chrono> // time library

{
  auto startTime = std::chrono::high_resolution_clock::now();

  /* work */

  auto endTime = std::chrono::high_resolution_clock::now();
  std::chrono::duration<double> duration = endTime - startTime;
  std::cout << "Time Elapsed: " << std::fixed << std::setprecision(6) << duration.count() << " seconds\n";
}

Example output: Time Elapsed: 0.001729 seconds