How to check all conditions in prolog?

Asked Aug 10 '21 at 19:09

Active Aug 11 '21 at 12:39

Viewed 145 times

I am trying to execute the following code where I want to check all conditions:-

w(X):-
    (     X=1 ->  
        write('Yes'),nl;
          X=1 ->  
        write('Yes'),nl;
          X=2 ->  
        write('No')).

I want it to write with X=1.

Yes
Yes

P.S. this is if-else, but I don't want if-else.

How can I achieve this, the code just returns the first true it finds?

asked Aug 10 '21 at 19:09

Reema Q Khan

2

Do you know what a failure driven loop is and other ways to implement it? – Guy Coder Aug 10 '21 at 22:50
2

Of interest: switch statement with [fallthrough](https://en.wikipedia.org/wiki/Switch_statement#Fallthrough) – Guy Coder Aug 11 '21 at 14:30
2

Of interest: [Forall instead of failure-driven loops](https://riptutorial.com/prolog/example/19554/forall-instead-of-failure-driven-loops) – Guy Coder Aug 11 '21 at 15:14
2

Of interest: [forall/2](https://www.swi-prolog.org/pldoc/man?predicate=forall/2) – Guy Coder Aug 11 '21 at 15:15
2

Of interest: This [answer](https://stackoverflow.com/a/19383448/1243762) related to double negation. – Guy Coder Aug 12 '21 at 07:58

0 Answers0