表达式求值
..........\Debug
..........\.....\exe001.exe
..........\.....\exe001.ilk
..........\.....\exe001.obj
..........\.....\exe001.pch
..........\.....\exe001.pdb
..........\.....\vc60.idb
..........\.....\vc60.pdb
..........\exe001.cpp
..........\exe001.dsp
..........\exe001.dsw
..........\exe001.ncb
..........\exe001.opt
..........\exe001.plg
..........\_desktop.ini