Clock in Wind32

   1: // GetTickCount accuracy is about 10~15ms

   2: DWORD start = GetTickCount();

   3: PRINT("Time used for  :%ld ms ", GetTickCount() - start);

   4:  

   5: // If need higher accuracy

   6: LARGE_INTEGER lp_s, lp_e, lp;

   7: QueryPerformanceCounter(&lp_s);

   8:    // measured function here ...

   9: QueryPerformanceCounter(&lp_e);

  10: QueryPerformanceFrequency(&lp);

  11: PRINT("Time used for func :%I64d ticks ", lp_e.QuadPart - lp_s.QuadPart);

  12: PRINT("Time used for func :%f sec ", (float)(lp_e.QuadPart - lp_s.QuadPart) / (float)lp.QuadPart);