1
1 mark
Consider the following code segment.
PROCEDURE combine(a, b)
{
RETURN(a + b * 2)
}
DISPLAY(combine(3, 4))What is displayed?
10
11
14
20
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Procedures (College Board AP® Computer Science Principles): Exam Questions
14 mins14 questions
2
1 mark
In the procedure call greet("Sam"), the value "Sam" is best described as a(n):
parameter
argument
return value
procedure name
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3
1 mark
Consider the following code segment.
PROCEDURE mystery(n)
{
IF(n > 0)
{
RETURN(n)
}
RETURN(0 - n)
}
DISPLAY(mystery(0 - 6))What is displayed?
-6
0
6
Nothing is displayed
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4
1 mark
Which two of the following are benefits of procedural abstraction? Select two answers.
A change to the logic only needs to be made in one place
Repeated code can be replaced by a single reusable procedure
The program is guaranteed to run faster
The program no longer needs any variables
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5
1 mark
A programmer notices the same five lines of code that calculate shipping cost appear in four different places in a program. Which change best demonstrates procedural abstraction?
Move the five lines into a procedure and call it from each of the four places
Copy the five lines a fifth time so all cases are covered
Add a comment above each of the four copies
Store the result in a different variable in each location
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6
1 mark
Consider the following procedure definition.
PROCEDURE repeatWord(word, count)
{
...
}In this definition, count is best described as a(n):
parameter
argument
return value
procedure name
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7
1 mark
Consider the following code segment.
PROCEDURE triple(n)
{
RETURN(n * 3)
}
result ← triple(4)
DISPLAY(result)What value is displayed when this code segment is executed?
4127Nothing is displayed
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8
1 mark
Consider the following code segment.
PROCEDURE sizeLabel(n)
{
IF(n ≥ 10)
{
RETURN("big")
}
RETURN("small")
}
DISPLAY(sizeLabel(10))What is displayed?
"small"10"big"Nothing is displayed
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9
1 mark
Consider the following code segment.
PROCEDURE maxOf(a, b)
{
IF(a > b)
{
RETURN(a)
}
RETURN(b)
}
DISPLAY(maxOf(7, 3) + maxOf(2, 9))What value is displayed?
12101816
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10
1 mark
A program contains three separate procedures named drawSquare5, drawSquare8, and drawSquare12, each of which draws a square of a fixed side length. Which change best demonstrates procedural abstraction through parameter generalization?
Replace the three procedures with one
drawSquare(side)procedure that takes the side length as a parameterAdd a fourth procedure
drawSquare20for the next size that is neededRename the three procedures so their names are shorter
Add a comment above each of the three procedures describing what it draws
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11
1 mark
A procedure named showMenu takes no parameters. In AP CSP pseudocode, which line correctly calls this procedure so that its instructions run?
showMenushowMenu()CALL showMenuPROCEDURE showMenu()
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12
1 mark
Consider the following code segment.
PROCEDURE label(word, suffix)
{
RETURN(CONCAT(word, suffix))
}
DISPLAY(label("Row", "4"))What is displayed?
"Rown""name4""Row4""word4"
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13
1 mark
Consider the following code segment.
PROCEDURE check(n)
{
IF(n MOD 2 = 0)
{
RETURN("even")
}
DISPLAY("odd")
RETURN("done")
}
DISPLAY(check(6))What is displayed when this code segment is executed?
oddoddthendonedoneeven
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14
1 mark
Consider the following code segment.
PROCEDURE addTax(price)
{
RETURN(price + price * 0.1)
}
total ← 0
prices ← [20, 30]
FOR EACH p IN prices
{
total ← total + addTax(p)
}
DISPLAY(total)What value is displayed?
5550560
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