LISP Questions & Answers – Iteration

This set of LISP Multiple Choice Questions & Answers (MCQs) focuses on “Iteration”.

1. Which is a general strategy for controlling how a computation evolves?
a) Recursion
b) Mapping
c) Iteration
d) None of the mentioned
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2. Which provides a way to write simple counting-oriented iteration procedures?
a) Do
b) Dotimes
c) Recursion
d) Iteration
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3. What will happen if a dotimes form has no result form?
a) Nil
b) T
c) Both Nil & T
d) Nothing
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4. What will be occupied in the first part of DO?
a) Procedures
b) List
c) Iterators
d) List of parameters
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5. Which are evaluated before initial binding?
a) All initialisation forms
b) Iterations
c) Procedures
d) None of the mentioned
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6. What is the output of the given statement?

span class="sy0"> * (prog1 (setf a 'x) (Setf b 'y) (setf c 'z))

a) X
b) Y
c) Z
d) XYZ
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7. What is the output of the given statement?

span class="sy0"> * (defun dotimes-expt (2 4)
(let ((result 1));
(dotimes (count 4 result);
(setf result (* 2 result)))));

a) 2
b) 4
c) 8
d) 16
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8. What is the output of the given statement?

span class="sy0"> * (setf freezing 32 boiling 212)

a) 32
b) 212
c) Both 32 & 212
d) None of the mentioned
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9. What is the output of the given statement?

span class="sy0"> * (setf cheers '(cheer cheer cheer))
* (setf loop-count 0)
* (loop (when (endp cheers) (return loop-count)) (setf cheers (rest cheers)) (setf loop-count (+ loop-count 1)))

a) 0
b) 2
c) Cheers
d) 3
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10. What is the output of the given statement?

span class="sy0"> * (progn (setf a 'x) (setf b 'y) (Setf c 'z))

a) X
b) Y
c) Z
d) XYZ
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Sanfoundry Global Education & Learning Series – LISP Programming Language.

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