How to parse arithmetic operators from string?

Question

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.

possible duplicate of in c#: expression evaluation function like flash script — Henk Holterman
– Henk Holterman, Commented Sep 28, 2010 at 10:12
Possible duplicate of Converting string expression to Integer Value. — Dour High Arch
– Dour High Arch, Commented May 9, 2017 at 1:21

Giorgi · Accepted Answer · 2010-09-28 10:10:21Z

4

You can use Calculator.NET

answered Sep 28, 2010 at 10:10

Giorgi

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1 Comment

tyumener Over a year ago

Thanks! I believe that is what I need.

veggerby · Accepted Answer · 2010-09-28 10:25:57Z

1

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

edited Sep 28, 2010 at 10:25

veggerby

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answered Sep 28, 2010 at 10:19

RichK

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Comments

Oded · Accepted Answer · 2010-09-28 10:11:53Z

-1

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:

answered Sep 28, 2010 at 10:11

Oded

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