LISP Questions & Answers – Structures

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

1. What is the process of creating new data types in lisp?
a) List
b) Structures
c) Procedures
d) None of the mentioned
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2. Which is the primitive that creates new structure types?
a) Defnum
b) Deftype
c) Defstruct
d) None of the mentioned
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3. What should be used with structure names with a combination?
a) Make-
b) Make
c) Create
d) Deploy
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4. Which enables storage in procedurally indexed places?
a) Defstruct
b) Object
c) Structure
d) None of the mentioned
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5. Which creates reader procedures for getting things out of an instance fields?
a) Structure
b) Defstruct
c) Class
d) Object
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6. What is the output of the given statement?

span class="sy0"> * (defstruct person (gender nil) (personality 'nice))
* (setf person-instance-1 (make-person))
* (setf person-instance-2 (make-person :gender 'female))

a) Person :gender female :personality nice
b) Person :gender
c) gender:Female
d) None of the mentioned
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7. What is the output of the given statement?

span class="sy0"> * (defstruct person (gender nil) (personality 'nice))
* (setf person-instance-1 (make-person))
* (setf person-instance-2 (make-person :gender 'female))
* (person-personality person-instance-2)

a) Female
b) Nice
c) Person
d) Both Female & Nice
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8. What is the output of the given statement?

span class="sy0"> * (defstruct person (gender nil) (personality 'nice))
* (setf person-instance-1 (make-person))
* (setf person-instance-2 (make-person :gender 'female))
* (person-p '(this is a list -- not a person instance))

a) Female
b) Nice
c) T
d) Nil
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9. What is the output of the given statement?

span class="sy0"> * (defstruct person (gender nil) (personality 'nice))
* (setf person-instance-1 (make-person))
* (setf person-instance-2 (make-person :gender 'female))
* (setf (person-surname person-instance-1) 'winston)

a) Winston
b) Nil
c) T
d) Error
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10. What is the output of the given statement?

span class="sy0"> * (defstruct employee (length-of-service 0) (payment 'salary))
* (setf employee-example (make-employee))
* (employee-length-of-service employee-example)

a) T
b) NIL
c) 0
d) Error
View Answer

Sanfoundry Global Education & Learning Series – LISP Programming Language.