Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
Prolog Database Question
Hi, So I'm trying to finish up a project for a class. It's a "dating database". It includes 5 males, and 5 females. I have to match them up using the following rules: (a) Only opposite sex can be matched (b) Male candidate should have a higher age than Female candidate (c) Male candidate should... -
Absolute value
I don't know what I did, but it works now. Thanks! All I did was re-save the program I did using notepad. -
Absolute value
ERROR: toplevel: Undefined procedure: sum/2 (DWIM could not correct goal) -
Absolute value
So this is my 2nd week learning prolog. I wrote a function to calculate the sum of a list of numbers. sum([], 0). sum([Head |Tail], TotalSum) :- sum(Tail, Sum1), TotalSum is Head + Sum1. So: input: ?- (sum([4,3,-5],X)) output: X=2 However, the goal is get the absolute value of the sum of the...
