How to parse arithmetic operators from string?

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+2 Q:

How to parse arithmetic operators from string?

Is it possible to assign an int variable a value that is a result of expression written in a string? E.g. I have a string "5 - 3" and the expected result is 2.

+2 A:

You can use Calculator.NET

Giorgi 2010-09-28 10:10:21

Thx for this. Will be useful at some point.

Noel Abrahams 2010-09-28 10:18:20

Thanks! I believe that is what I need.

tyumener 2010-09-28 10:34:28

There is nothing built into the framework, so you can either built your own mathematical expression parser, or use one of the many libraries out there.

A search on ".net arithmetic parser" comes up with many results, some free, some not.

For instance:

Oded 2010-09-28 10:11:53

Another open one: http://www.c-sharpcorner.com/uploadfile/mgold/codedomcalculator08082005003253am/codedomcalculator.aspx

Ruel 2010-09-28 10:13:51

Thanks for your reply. That's what I need. Unfortunately can not mark it as useful - don't have enough reputation.

tyumener 2010-09-28 11:20:01

That's no problem. :)

Ruel 2010-09-28 11:42:16

http://www.codeproject.com/KB/dotnet/Expr.aspx

manixrock 2010-09-28 10:16:20

That's the arcticle I start my search with :)

tyumener 2010-09-28 11:20:39

+1 A:

If you fancy writing your own (I did, it's fun!). Have a look on Wikipedia for:

Shunting Yard Algorithm and Reverse Polish Notation

The pseudo-code is really clear and it's a great learning experience

RichK 2010-09-28 10:19:23

ansaurus

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How to parse arithmetic operators from string?

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