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CSE 240 Final Exam Review (Answered) 92 Questions and Correct Answers, 2024/2025.
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CSE 240 Final Exam Review (Answered) 92 Questions and Correct Answers, 2024/2025.
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CSE 240 Final Exam Review(Answered) 92 Questions and Correct
Answers, 2024/2025.
Functional programming languages do NOT allow us to define:
variables whose value can be modified.
The statement "a function is a first-class object" means that a function
can be placed in a place where a value is expected.
What notation requires parentheses in order to correctly define the order of computation?
infix notation
Convert the following expression into prefix-p notation (a Scheme statement):
-5 * (2 + 1/2) + 40
(+ (* (- 5) (+ 2 (/ 1 2))) 40)
One of the major differences between the imperative and functional programming languages is that
the functional programming languages do NOT (in general!)...
have side-effects.
Which of the following is a valid Scheme expression?
(* 9 (/ (- 4 2) 7))
Convert the following expression into prefix-p notation (a Scheme statement):
10 + (5 - 3) +
(+ 10 (- 5 3) (/ 2 4))
Given an expression: x1 + x2 + x3 + x4
Which language allows us to evaluate the expression in this order: (1) x1 plus x2; (2) x3 plus x4; (3)
sum of ( x1 + x2 ) plus sum of ( x3 + x4 ), without concern for producing a different result than other
evaluation orders:
Scheme
What is the expected result for this expression (in Scheme)?
(string-ref "Hello World" 4)
#\o
Which of the following expression will return false (#f)?
(number? #\7)
, Given this procedure, what is the return result?
(define (guess value)
(cond ((number? value) "I'm a number")
((char? value) "I'm a character")
((integer? value) "I'm a integer")))
(guess 10)
"I'm a number"
Which of the following are typical advantages of using a REPL for software development?
They let you interact with a program after it has populated the environment to understand what is
happening.
They let you experiment with small pieces of code to understand how they work.
What data structure is used in Scheme for representing extremely large integers?
probably a list. Really: we shouldn't know or care.
The Scheme form (char? #\5) will return
true (#t)
What statements contain non-functional features of Scheme? Select all that apply.
(begin (write x) x)
(display x)
What functional feature does the code below best exhibit?
(define start-engine (lambda ()
(error-detection (wheel-velocity (wheel-sensor)) (body-velocity))))
procedures are first class objects.
A let-form in Scheme defines a set of
local names.
A let-form in Scheme is equivalent (in giving names to values) to
an unnamed/lambda procedure.
Given the Scheme code, answer the following questions.
((lambda (x)
((lambda (x y)
(+ x y))
4 (* 6 x)))
3)
(1) The value to be passed to the parameter y is 18 .
(2) The final output of the piece of code is 22 .
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