Easily measure elapsed time

Question

I am trying to use time() to measure various points of my program.

What I don\'t understand is why the values in the before and after are the same? I understand thi

Answer 1

#include 
#include 

using namespace std;

void f() {
  clock_t begin = clock();

  // ...code to measure time...

  clock_t end = clock();

  function convtime = [](clock_t begin, clock_t end)
  {
     return double(end - begin) / CLOCKS_PER_SEC;
  };

  printf("Elapsed time: %.2g sec\n", convtime(begin, end));

}

Similar example to one available here, only with additional conversion function + print out.