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I am trying to make a calculator in C or Objective-C that accepts a string along the lines of
8/2+4(3*9)^2
and returns the answer 2920. I would prefer not to use a generator like Lex or Yacc, so I want to code it from the ground up. How should I go about doing this? Other than the Dragon book, are there any recommended texts that cover this subject matter?
Try this:
http://en.wikipedia.org/wiki/Shunting-yard_algorithm