Robert A LaBudde <ral <at> lcfltd.com> writes:
> before Lotus 1-2-3 came out!), and wrote an expression evaluator in 
> FORTRAN IV using in-fix notation. I first wrote one in RPN notation. 

Speaking of FORTRAN, there was a neat shortcut expression evaluator designed for
FORTRAN I, it is on Wikipedia. I have tested it (just add parens to cope with
deeper expressions - eventually buffer size quickly limits this in small micros
- in FORTRAN the limit was likely the usable line length on a punched card):

See under 'Alternatives to Dijkstra's Algorythm':

  http://en.wikipedia.org/wiki/Operator-precedence_parser

Peter


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