I was asked to do this for a job interview:


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C# Development Exercise

Write a simple evaluator which will parse and evaluate expressions like the
following:

    (5 + 5) * (3 + 2) - 1

It only needs to support the operators * + - () and unary minus. The
submission should be in C# .

We will be considering:

1) Is it readable and understandable?
2) Could the implementation be extended?
3) What were the design decisions? What are the trade-offs?

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I came up with this:

Which when compiled and ran :

It works fine .. Even has some basic syntax checking before evaluating.