What is the purpose of parentheses () in a programming
expression?
A To print expressions
B To group expressions
C To run expressions
D To
... [Show More] compose expressions - .....ANSWER....B
Given float x = 3.0.
Which expression evaluates to 2.0?
A x / 3 * 2 + 2
B x - 2/3
C x + 0.5 /2
D x / 2 + 0.5 /2 + .25 - .....ANSWER....D
Which expression evaluates to true only when the user
is within 3 years of 21 years, given a variable x
containing a user's age?
A x >= 18) or ( x <= 24)
B ( x >= 18) and ( x <= 24)
C ( x < 18) or ( x > 24)
D ( x < 18) and ( x > 24) - .....ANSWER....B
Which data type is used for items that are measured in
length?
A Integer
B Float
C String
D Boolean - .....ANSWER....B
Which data type should be used to keep track of how
many planes are in a hangar?
A Integer
B Float
C String
D Boolean - .....ANSWER....A
A function should convert hours and minutes to
seconds, such as converting 1 hour and 10 minutes to
4,200 seconds.
What should be the input to the function?
A Hours only
B Minutes only
C Hours and minutes
D Hours, minutes, and seconds - .....ANSWER....C
A function returns a number x cubed. For example, if x
is 3, the function returns 3 * 3 * 3, or 27.
What should be the input to the function?
A x
B x, x
C x, x, x
D 27 - .....ANSWER....A
A function calculates the weight difference (Diff) given
two sample weights (S1 and S2).
What should be the output from the function?
A S1 only
B S2 only
C S1 and S2
D Diff - .....ANSWER....D
function P(integer x) returns integer y
y = 2 * x
What does P(5) evaluate to?
A 2
B 5
C 10
D 25 - .....ANSWER....C
Function F()
Put "Hey" to output
What entire output appears after three successive calls
to F()?
A Hey
B HHHey
C HeyHeyHey
D Hey Hey Hey - .....ANSWER....C
What is a valid user-defined function name?
A A reserved word
B Any valid identifier
C Any variable name
D A floating-point number - .....ANSWER....B
A function MyFct has an input x and an output z.
What does MyFct return?
A Nothing
B x only
C z only
D x and z - .....ANSWER....C
What is the return value of a function?
A Output of a function
B Call to run the function
C Data passed to the function
D Variable in the declaration of the function -
.....ANSWER....A
A program should continue accepting input numbers,
adding each to a sum, until a 0 is input.
Which control structure should be used?
A If statement
B For loop
C Multiple if statements
D While loop - .....ANSWER....D
Joe is building an online game. He wants to provide a
riddle and have the player guess the answer. The game
needs to prompt the user to enter the answer, check to
see if it the input provided does not match the correct
answer, and continue prompting the user until the
answer entered matches the correct answer.
Which control structure supports Joe's needs?
A For loop
B While loop
C Do-while loop
D If-else branch - .....ANSWER....C
What is put to output by the following pseudocode?
x = 3
do
Put x to output
Put " " to output
x = x - 1
while x > 0
A 3 2 1 0
B 3 2 1 0 -1
C 2 1 0
D 3 2 1 - .....ANSWER....D
A programmer has developed the following code:
count = 0
while count is less than 5:
print 'Hello'
What is the result of implementing this code?
A 'Hello' will print four times.
B 'Hello' will print five times.
C The program will throw an error.
D 'Hello' will print indefinitely. - .....ANSWER....D
Which operator should be used to determine if a
number is evenly divisible by 5?
A +
B -
C *
D % - .....ANSWER....D [Show Less]