I am writing a program in c++ that shows if an expression (example 98+56*(4+7) < 7-6*6) is true or false.. The expression will be taken as an input from the user..
Is there any function that I can use for this?
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Vincent Savard
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Adela
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No. There is no "eval" function in C++. – Šimon Tóth Jan 26 '16 at 15:00
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@Adela Try [A C++ expression parser](http://www.speqmath.com/tutorials/expression_parser_cpp/index.html) – tchelidze Jan 26 '16 at 15:03
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You need math expression evaluator.
You can try this library: https://fastmathparser.codeplex.com/
In the link you'll find a sample code.
You can find an algo in this link: Evaluating arithmetic expressions from string in C++
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p.magalhaes
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No, but implementing the Shunting Yard Algorithm is fairly easy if you are reasonably competent at programming.
I know link only answers are abhorred but here is the link on wikipedia (which is unlikely to disappear soon) and is actually quite good.
graham.reeds
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