AP CSP Semester Exam

Front

Any programming language that lets users create programs by manipulating “blocks” or graphical programming elements, rather than writing code using text.

Back

Block-based programming language

Front

A sequence of steps written in a programming language that can be followed to solve a problem, especially by a computer.

Back

Computer Program

Front

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

Back

Bug

Front

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

Back

within an onEvent programming statement

Front

Finding and fixing problems in an algorithm or program

Back

Debugging

Front

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

Back

"1"
"3"
"2"

Front

What color is blueButton after the code above runs? Options: blue, red, green, yellow

Back

green

Front

What color is redButton after the code above runs?

Back

yellow

Front

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

Back

red

Front

What text will be output by the program? Options: less than 10, less than 20, less than 30, 30 or more

Back

30 or more

Answer explanation

Walking through the program line by line:

On line 1, the variable score is initialized and assigned the value 0.

On line 2, the variable score is assigned its current value (0) plus 10. On line 3, the variable score is assigned its current value (10) plus 10. On line 4, the variable score is assigned its current value (20) plus 10.

On line 5, the boolean expression score < 10 evaluates to false since the current value of score is 30, which causes the command on line 6 to not execute.

On line 7, the boolean expression score < 20 evaluates to false since the current value of score is 30, which causes the command on line 8 to not execute.

On line 9, the boolean expression score < 30 evaluates to false since the current value of score is 30, which causes the command on line 10 to not execute.

Since all of the if-else-if statements have evaluated to false, the command inside the else statement will run and the console prints 30 or more.