//mark start time
    clock_t  st     = clock();
    double  start = cpuTime();

    //do stuff
    double  sum = 0;
    for (double d=0; d<10000; d+=0.01) {
        sum += sin( d ) * cos( d );
    }
    Sleep( 2000 );  //sleep for 2 sec

    //mark end time
    double  end = cpuTime();
    clock_t  et    = clock();

    //calc deltas
    double  cpuTime        = end - start;
    double  elapsedTime = ((double)et - st) / CLOCKS_PER_SEC;

    //report results
    cout << "cpu time = " << cpuTime << " sec" << endl;
    cout << "elapsed time = " << elapsedTime << " sec" << endl;

    return 0;
}