Re: [Tutor] Simple RPN calculator

[Kent Johnson]

RPN reverses the order of operator and operand, it doesn't reverse the whole string. So in Polish 
Notation 2 + 3 is +23 and (2 + 3) - 1 is -+231; in RPN they become 23+ and 23+1-

Kent
Brian van den Broek wrote:
By analogy, I had always assumed that Polish Arithmetic would read
(2 + 3) - 1 and
2 + (3 - 1)
as:
-+231 and
+2-31
I further assumed that RPN would simply reverse this. If that isn't 
true, I think I need to go investigate the origins of the name.

Best to all,
Brian vdB
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