多边形\1.cpp ......\1.dsp ......\1.dsw ......\1.ncb ......\1.opt ......\1.plg ......\Debug\1.exe ......\.....\1.ilk ......\.....\1.obj ......\.....\1.pch ......\.....\1.pdb ......\.....\vc60.idb ......\.....\vc60.pdb ......\图表.xlsx ......\数据.txt ......\Debug 多边形