4_18\4_18.dsp
....\4_18.dsw
....\4_18.ncb
....\4_18.opt
....\4_18.plg
....\Debug\4_18.exe
....\.....\4_18.ilk
....\.....\4_18.pch
....\.....\4_18.pdb
....\.....\tree.obj
....\.....\vc60.idb
....\.....\vc60.pdb
....\tree.cpp
....\Debug
4_18