AP CSP - Unit Programming (1)

What is a benefit to using pseudocode?

Choose 1 answer:

• Pseudocode runs much faster than other programming languages.

• Pseudocode is understood by all computers everywhere.

• Pseudocode can represent coding concepts common to all programming languages.

• Pseudocode can run in the web browser.

Damien is writing a program to teach Elvish languages:

DISPLAY ("Mae govannen!") DISPLAY ("=") DISPLAY ("Well met!")

The following paragraph describes how the program works.

Fill in the blanks:

This is a computer program with 3 statements. Each statement calls a procedure named DISPLAY which expects a single ....... to determine what to display on the screen.

• pseudocode

• procedure

• parameter

• statement

This short program displays the winning result in a ship naming contest:

DISPLAY ("Boaty")

DISPLAY ("McBoatFace")

What does the program output?

• BoatyMcBoatFace

• Boaty McBoatFace

• Boaty

  McBoatFace

Consider the following code snippet:

DISPLAY (":")

DISPLAY ("-")

DISPLAY ("O")

After the code runs, what is displayed?

• O - :

• : - O

• O-:

• :-O

What will happen if you type pseudocode in another language's programming environment and try to run the program?

• The program will run, because all programming environments understand pseudocode.

• The program will not run, because programming environments only understand the language they're built for.

• The program will run as long as you're using the pseudocode for that language (e.g. pseudo-JS for JavaScript).

Oakley is making a program to display events for the next few days. Here's a snippet of the code:

today ← 11

tomorrow ← 12

DISPLAY (tomorrow)

DISPLAY (today)

After running that code, what will be displayed?

• 12 12

• 12 11

• 11 11

• 11 12

Corey is experimenting with assigning and displaying variables. Here's his code:

test1 ← 200

DISPLAY (test1)

test2 ← 100

test2 ← test1

DISPLAY (test2)

test1 ← test2

DISPLAY (test1)

What will be the output of that code?

• 200 200 200

• 200 100 100

• 200 200 100

• 200 100 200

Melody is organizing a bake sale and making a program to help her plan the ingredients.

Each batch of cookies requires 3 eggs, and she's going to make 9 batches. This code calculates the total eggs required:

eggsInBatch ← 3

numBatches ← 9

neededEggs ← eggsInBatch * numBatches

Melody realizes she'll need to buy more eggs than necessary, since she needs to buy eggs by the dozen.

Now she wants to calculate how many eggs will be leftover in the final carton of eggs. That will help her decide whether to make extra icing.

Which line of code successfully calculates and stores the number of leftover eggs in the final carton?

• leftoverEggs ← 12 - (neededEggs MOD 12)

• leftoverEggs ← (neededEggs MOD 12) - 12

• leftoverEggs ← neededEggs * 12

• leftoverEggs ← 12 + (neededEggs MOD 12)

• leftoverEggs ← 12 + (neededEggs / 12)

Laquan is writing a program to calculate the perimeter of a rectangle, based on this formula:

P = 2l + 2w

The program starts with this code:

length ← 120

width ← 13

Which lines of code successfully calculate the perimeter?

• perimeter ← (2length) + (2width)

• perimeter ← 2 (length + 2) width

• perimeter ← 2 * length + 2 * width

• perimeter ← 2length + 2width

• perimeter ← (2 * length) + (2 * width)

Nanami is researching how much software engineers make. She's writing a program to convert yearly salaries into hourly rates, based on 52 weeks in a year and 40 hours in a week.

The program starts with this code:

salary ← 105000

wksInYear ← 52

hrsInWeek ← 40

Which lines of code successfully calculate and store the hourly rate?

• hourlyRate ← hrsInWeek / wksInYear / salary

• hourlyRate ← salary % wksInYear % hrsInWeek

• hourlyRate ← salary / wksInYear / hrsInWeek

• hourlyRate ← (wksInYear / hrsInWeek) / salary

• hourlyRate ← (salary / wksInYear) / hrsInWeek