检测圆
......\2.BMP
......\3.jpg
......\4.BMP
......\Debug
......\.....\ch6_ex6_1.exe
......\.....\ch6_ex6_1.ilk
......\.....\ch6_ex6_1.obj
......\.....\ch6_ex6_1.pch
......\.....\ch6_ex6_1.pdb
......\.....\vc60.idb
......\.....\vc60.pdb
......\ch6_ex6_1.cpp
......\ch6_ex6_1.dsp
......\ch6_ex6_1.dsw
......\ch6_ex6_1.ncb
......\ch6_ex6_1.opt
......\ch6_ex6_1.plg