链表的添加。删除。和插入
........................\001.cpp
........................\Debug
........................\.....\001.obj
........................\.....\BuildLog.htm
........................\.....\test.exe
........................\.....\test.ilk
........................\.....\test.pdb
........................\.....\vc70.idb
........................\.....\vc70.pdb
........................\test.ncb
........................\test.sln
........................\test.vcproj