mathematical expressions

"Seidl Markus" <_Maverick_@web.de>
6 May 2003 01:29:02 -0400

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From: "Seidl Markus" <_Maverick_@web.de>
Newsgroups: comp.compilers
Date: 6 May 2003 01:29:02 -0400
Organization: T-Online
Keywords: parse, arithmetic
Posted-Date: 06 May 2003 01:29:02 EDT

Hello :)


I want to write a parser which converts sth like "5+5^2" in an image >
5+5² < (i mean converting from mathematical expression to how you
would write them with your own hand...)


My Problem: for example I write a rule like


<term> ::= 'sqrt(' <term> ')'
                                | <number>


How can i draw the squareroot, when i have the following expression:
sqrt(sqrt(sqrt(5))) ? I think im stuck there.I think i cannot draw
the first square because i dont know how big and long i have to made
it, and i cannot draw the last term, because i don't know where i have
to draw them ( distance between the left edge of the image) ....


can anyone give me a tip ?


thanks for reading, and sorry for my english ...


Markus Seidl

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