__Environment:__ VC 4.0/5.0

I made this code while working on a program for analyzing mathematical expressions, and

I made some classes for making things easier.

See sample code: express.zip ; the programme was writen using

MSVC 4.0 and compiled with MSVC 5.0

This classes can be used for evaluating expressions like :

1+4*(5+9) or

1+var1+var2*(5+b5), where var1 , var2 can be: numeric values or expressions or other

numeric stuff. See the sample code.

The class hierarchy that I implemented is :

**CExpression** derived from **CObject **– represents

a mathematical expression; use **ChangeExpression** to assign a string

expression to the expression object

The folowing mathematical functions are known: sin, cos, exp, sqrt, log, tg, ctg, asin,

acos, atg and the default operations like +, -, *, /, ^ – (pow()); the abs function

is implemented using: |expresion|.

**CValue** derived from** CObject** – represents a value; use

**SetValue/GetValue** – to set / get the value, or **UpdateValue**

to Update the value

**CExpValue** derived from **CValue** – represents a value

that is defined by a expresion

**CNumericValue** derived from **CValue** – represents a

simple numeric value

The best way of understanding the way that this classes are functioning is to see the

sample project.

If you have some questions or you have some improvement ideas, or you find a bug please

send me a mail to: [email protected] or [email protected]

See sample code: express.zip