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evaluate a string expression in if statement Linux C/C++

P: n/a
How can we evaluate a string expression in if statement Linux C/C++

Nov 14 '06 #1
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P: n/a
If you have only one const (e.g. one number), there is a lot of
functions/class for str->int (or double, or float, or ...) conversion
(like std::strstream).

If it is expression of type 123+12-123/123, you must write some kind of
parser/evaluator (look for conversion of infix <-sufix form).

Best,
Zaharije Pasalic

Nov 14 '06 #2

P: n/a
If you do not want to write parser, you can embed some scripting
language (for example python) in your C/C++ program and evaluate the
expression in this embedded scripting language. Yes, this is overkill,
but on the other hand it is very quick - there is enough to simply
modify first embedding tutorial you find.

Nov 14 '06 #3

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