View Full Version : String as equation?

Sep 28, 2010, 10:37 PM
Has anyone had success turning strings into equations?

ie. take a stored string of 2*5+6 and output 16

Sep 29, 2010, 02:29 AM
You'll have to write a parser.

EDIT: This might not be trivial. I googled "c equation parser" and found this (http://www.ubasics.com/simple_c_equation_parser).

Sep 29, 2010, 08:54 AM
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Perhaps you can use JavaScript's eval() function.

Sep 29, 2010, 09:39 AM
This has been an assignment in CS courses since 1962. I think you'll be able to find some source code online.

expression evaluation code


Sep 29, 2010, 04:33 PM
Thanks for all the suggestions. I'm going to look into storing them as actual values... we'll see how it goes.