A wait cursor is a visual cue (such as an hour glass) used to indicate that a software is busy processing data. The waitCursor class provides methods and properties needed to open and control wait cursors.
int imax = 100000;
waitCursor junk; // just need to declare this, no need to reference to it
double aa = 0.5;
DWORD dw1 = GetTickCount();
for(int ii = 0; ii < imax; ii++)
aa = sin(aa) + ii * aa;
printf("It took %d ms for %d loop\n",GetTickCount()-dw1,imax);