知半径求面积\1.cpp
............\1.dsp
............\1.dsw
............\1.ncb
............\1.opt
............\1.plg
............\9.dsp
............\9.dsw
............\9.ncb
............\9.opt
............\Debug\1.exe
............\.....\1.obj
............\.....\1.pdb
............\.....\vc60.pdb
............\Debug
知半径求面积