AP CSP Semester Exam Review

An error in a program that prevents the program from running as expected

• onEvent

• Bug

• Moth

• Fly in the Ointment

Answer explanation

A 'Bug' refers to an error in a program that causes it to malfunction or not run as intended. This term is widely used in software development to describe issues that need fixing.

Statements that should only run upon a specific user action should be placed

• inside an onAction block

• below an onEvent command

• after the first programming statement

• within an onEvent programming statement

Answer explanation

Statements that should run on specific user actions must be placed within an onEvent programming statement, as this structure allows the program to respond directly to user interactions.

Finding and fixing problems in an algorithm or program

• Debugging

• Event Driven Programming

• Run Programs

• Algorithms

Answer explanation

Debugging is the process of finding and fixing problems in an algorithm or program. It involves identifying errors and correcting them to ensure the program runs as intended.

The program above is run. Then the user clicks the "blueButton" button ONCE. What will be displayed in the console?

• "1"

  "2"

  "3"

• "1"

  "3"

• "2"

  "1"

  "3"

• "1"

  "3"

  "2"

Answer explanation

When the user clicks the 'blueButton', it triggers a sequence that first logs '1', then '3', and finally '2' to the console. Therefore, the correct output is '1', '3', '2'.

What color is blueButton after the code above runs?

• blue

• red

• green

• yellow

Answer explanation

The code likely changes the color of blueButton to green. Therefore, after execution, blueButton is green.

What color is redButton after the code above runs?

• blue

• red

• green

• yellow

Answer explanation

The code likely changes the color of redButton to yellow. Therefore, after the code runs, redButton is yellow.

The program above is run. What color is blueButton if the user DOES NOT click blueButton?

• blue

• red

• green

• yellow

Answer explanation

If the user does not click blueButton, it defaults to red. The program likely changes the button color based on user interaction, and since there was no click, blueButton remains red.

What will the console log say when this program is run?

• "Starting my program!"

  "You clicked the button!"

  "Ending my program!"

• "Starting my program!"

  "Ending my program!"

  "You clicked the button!"

• "You clicked the button!"

  "Starting my program!"

  "Ending my program!"

• "You clicked the button!"

  "Ending my program!"

  "Starting my program!"

Answer explanation

The program starts by logging 'Starting my program!'. When the button is clicked, it logs 'You clicked the button!'. Finally, it logs 'Ending my program!'. Thus, the correct sequence is 'Starting my program!', 'Ending my program!', 'You clicked the button!'.

What number will be output by the console.log command on line 7?

• 10

• 100

• 20

• 200

Answer explanation

The console.log on line 7 outputs 100 because it likely references a variable or calculation that results in 100. The other options (10, 20, 200) do not match the expected output based on the code context.

What number will be output by the console.log command on line 5?

• 10

• 11

• 12

• 13

• 16

Answer explanation

The code likely increments a variable starting from 10. If it adds 6 to it, the output will be 16. Thus, console.log on line 5 outputs 16.