例5-18 ......\Debug ......\.....\fitellipse.obj ......\.....\hull.obj ......\.....\hull.pch ......\.....\hull.pdb ......\.....\vc60.idb ......\.....\vc60.pdb ......\hull.cpp ......\hull.dsp ......\hull.dsw ......\hull.ncb ......\hull.opt ......\hull.plg ......\Makefile