Answer / chaitanya

“=” triggers unification in Prolog
“is” triggers arithmetic evaluation in Prolog
So, in Prolog you cannot use “=” when you want to calculate something like 2+4=6, but instead you have to use 2+4 is 6.

 What is the output of the given statement? * (defmethod area ((figure rectangle)) (* (rectangle-width figure) (rectangle-height figure))) a) Area b) Rectangle c) Height d) Error

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 What is the output of the given statement? * (defclass article() ((title :accessor article-title :initarg :title) (author :accessor article-author :initarg :author))) a) Article b) c)  d) None of the mentioned

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 Which hides details behind abstraction boundaries? a) Procedures b) Procedure abstraction c) Recursion d) Both a & b

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 Explain what is the importance of the hash table in LISP?

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What is the output of the given statement? * (defclass article() ((title :accessor article-title :initarg :title) (author :accessor article-author :initarg :author))) * (defclass computer-article (article) ()) * (defclass business-article (article) ()) * (defclass political-article (article) ()) * (setf articles (list (make-instance ‘business-article :title “Memory Prices down”))) a) Business article b) Political article c) Business article

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What is the output of the following statement? * (setf thing ‘point r 1) * (case thing (circle (*pi r r))(sphere (* 4 pi r r))) a) 1 b) 12.56637 c) NIL d) T

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What is the output of the following statement? * (defun book-author (book) (second book)) * (setf book-example-1 ‘((Artificial Intelligence) (Patrick) (Technical AI))) * (book-author book-example-1) a) Artificial Intelligence b) Patrick c) Technical AI d) None of the mentioned

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 What is the output of the following statement? * (defun make (title author) (list (list ‘title title) (list ‘author author))) * (setf book (make ‘(Common Lisp) ‘(Guy steele))) * (defun book-author-writer (book author) (cons (list ‘author author) book)) a) Book b) Book-author c) Book-author-writer d) None of the mentioned

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 What is the value of last consequent form in the triggered clause? a) Value of the entire COND b) Trigger c) Consequent d) All of the mentioned

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Which keyword is used to define the method? a) Defun b) Destruct c) Demake d) Defmethod

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Which makes it easy to identify the first entry encountered that satisfies a given predicate? a) Reusing b) Revoking c) Template d) Filtering

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 Explain why PROLOG language is stated as a procedural language?

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