表达式计算\Debug\Expresion.pch
..........\.....\vc60.idb
..........\.....\vc60.pdb
..........\Debug
..........\Expresion.cpp
..........\Expresion.dsp
..........\Expresion.dsw
..........\Expresion.ncb
..........\Expresion.opt
..........\Expresion.plg
..........\sqstack.cpp
..........\SqStack.h
表达式计算