Several questions about header in C++ 11

Question

I have several questions about new header in C++ 11. Using Windows 7, Visual Studio 2012.

Looking at the example http://en.cppreference.com/w

Answer 1

1) I'm fairly certain the highest resolution you can get is to use std::chrono::high_resolution_clock and then don't do any duration casting:

int elapsed_ticks = (end-start).count();

2) Change the argument of duration_cast to something like nanoseconds:

int elapsed_seconds = std::chrono::duration_cast
                             (end-start).count();