measure_time.cpp

#include <chrono>

int main()
{
  auto start = std::chrono::system_clock::now();
  // foo();
  auto end = std::chrono::system_clock::now();

  // elapsed time in seconds
  std::chrono::duration<double> secs = end - start;

  // elapsed time in milli seconds
  std::chrono::duration<double, std::milli> millis = end - start;

  return 0;
}