{

const auto start = chrono::high_resolution_clock::now ();

double d = 0.0;

for (size_t i = 0; i < 100000000; i++)

d += sin (i);

cout << "Computation result: " << d << endl;

const auto end = chrono::high_resolution_clock::now ();

chrono::duration<double> elapsed = end - start;

cout << "Elapsed time: " << elapsed. count () << " seconds" << endl;

return 0;