Is there a way to do an if in prolog, e.g. if a variable is 0, then to do some actions (write text to the terminal). An else isn’t even needed, but I can’t find any documentation of if.
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Is there a way to do an if in prolog, e.g. if a variable is 0, then to do some actions (write text to the terminal). An else isn’t even needed, but I can’t find any documentation of if.
A standard prolog predicate will do this.
will evaluate to true if you call it with 5 and fail(return false) if you run it with anything else. For not equal you use \=
Technically it is does not unify, but it is similar to not equal.
Learn Prolog Now is a good website for learning prolog.
Edit:
To add another example.