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How about the last parameter in the base case? pow(_,0,1). I understand the first parameter is anonymous, so we dont care about it, the second parameter is obvious, but I dont understand how the '1' is reached. Thanks!

Gregorio Di Stefano
– Gregorio Di Stefano

2011-10-17 21:03:42 +00:00
Commented Oct 17, 2011 at 21:03
1

pow(X,0,1) is a fact. It means that whatever X you take to the power of 0 yields 1. if you only use that fact you can ask prolog questions like: pow(48,0,X). and it will answer that X = 1

Joe Lehmann
– Joe Lehmann

2011-10-17 22:05:45 +00:00
Commented Oct 17, 2011 at 22:05

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