Re: Arithmetic expressions w. recursive descent parser?

bmildh@xxxxxxxxxxxxx wrote:

> The problem is that I cant get the implementation right with +,- in
> combination w. numbers starting w. + or -, eg. -45, +3, etc.
> I would appreciate any help, pointers, tips, on how to get the + and -
> operator correctly implemented with numbers that could start with + or
> - .

I think this problem is solved in PL/0,
the tiny compiler by Niklaus Wirth which
was published in 1976:

http://www.saar.de/~awa/images/pl0-12.gif
http://www.saar.de/~awa/pl0-synt.htm

This web page also contains Java source code.

.

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