Member Avatar for Muaz AL-Jarhi

Dear all,
Hello,

Does any of you know prolog language well? i have a project on it that is due next week.. i just wana know how to imlement function or a struture that compares any two elements in a list and returns true if the first element comes first before the second in the list or false other wise.. i have tried but coudnt do it..

Please help as much as you can and as soon as possible.
Thank you all so much!


sincerely,
muaz

  • 2 Contributors
  • 2 Replies
  • 85 Views
  • 3 Weeks Discussion Span
  • Latest Post Latest Post by Muaz AL-Jarhi
Member Avatar for gabs

I havn't used it for a while, but maybe something like this?

compare(A,B,[A|[B|_]).
compare(A,B,[A|[_|T]):-compare(A,B,[A|T]).
compare(A,B,[_|T]):-compare(A,B,T).
Member Avatar for Muaz AL-Jarhi

Dear all,
Hello,

I have a problem in Prolog. When I consult My program and try to write in a querey the following error message occurs:

ERROR: source_sink '...' does not exist

I tried to find about this error and slove it but couldnt. can any of you help me with this?

Please help as much as you can and as soon as possible.
Thank you all so much!

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.