444绘制蜗牛曲线
...............\Snail
...............\.....\Debug
...............\.....\.....\MainFrm.obj
...............\.....\.....\Snail.exe
...............\.....\.....\Snail.ilk
...............\.....\.....\Snail.obj
...............\.....\.....\Snail.pch
...............\.....\.....\Snail.pdb
...............\.....\.....\Snail.res
...............\.....\.....\SnailDoc.obj
...............\.....\.....\SnailView.obj
...............\.....\.....\StdAfx.obj
...............\.....\.....\vc60.idb
...............\.....\.....\vc60.pdb
...............\.....\MainFrm.cpp
...............\.....\MainFrm.h
...............\.....\ReadMe.txt
...............\.....\Resource.h
...............\.....\Snail.clw
...............\.....\Snail.cpp
...............\.....\Snail.dsp
...............\.....\Snail.dsw
...............\.....\Snail.h
...............\.....\Snail.ncb
...............\.....\Snail.opt
...............\.....\Snail.plg
...............\.....\Snail.rc
...............\.....\SnailDoc.cpp
...............\.....\SnailDoc.h
...............\.....\SnailView.cpp
...............\.....\SnailView.h
...............\.....\StdAfx.cpp
...............\.....\StdAfx.h
...............\.....\res
...............\.....\...\Snail.ico
...............\.....\...\Snail.rc2
...............\.....\...\SnailDoc.ico
...............\.....\...\Toolbar.bmp