AP CSP Conditions

A Boolean expression is an expression that evaluates to which of the of the following?

• Any Integer

• Integers between 1 and 10

• Any single character

• Yes/Maybe/No

• True/False

Two grids are shown. Each grid contains a robot represented as a triangle. Both robots are initially facing left. Each robot can move into a white or gray square, but cannot move into a black region.

For each grid, the program below is intended to move the robot to the gray square. The program uses the procedure Goal_Reached ( ), which evaluates to true if the robot is in the gray square and evaluates to false otherwise.

For which of the grids does the program correctly move the robot to the gray square?

• Grid I only

• Grid II only

• Both Grid I and Grid II

• Neither Grid I nor Grid II

An office building has two floors. A computer program is used to control an elevator that travels between the two floors. Physical sensors are used to set the following Boolean variables.

The elevator moves when the door is closed and the elevator is called to the floor that it is not currently on.

Which of the following Boolean expressions can be used in a selection statement to cause the elevator to move?

• (onFloor1 AND callTo2) AND (onFloor2 AND callTo1)

• (onFloor1 AND callTo2) OR (onFloor2 AND callTo1)

• (onFloor1 OR callTo2) AND (onFloor2 OR callTo1)

• (onFloor1 OR callTo2) OR (onFloor2 OR callTo1)

Consider the code segment.

If the variables onTime and absent both have the value false, what is displayed as a result of running the code segment?

• Is anyone there?

• Better late than never.

• Hello. Is anyone there?

• Hello. Better late than never.

A game programmer uses this nested conditional in their online Four Square game.

When mouseX is 173 and mouseY is 199, what will be the value of currentSquare?

• 1

• 2

• 3

• 4

Trace the code and plot the movements of the robot for the 3 scenarios.

If the robot is directed to move onto a black square, it “crashes” and the program ends.

Choose the scenario that results in a "crash."

• 
• 
• 

Trace the code and plot the movements of the robot for the 3 scenarios.

If the robot is directed to move onto a black square, it “crashes” and the program ends.

Choose the scenario that results in a "crash."

• 
• 
• 

Trace the code and plot the movements of the robot for the 3 scenarios.

If the robot is directed to move onto a black square, it “crashes” and the program ends.

Choose the scenario that results in a "crash."

• 
• 
• 

Consider this code snippet:

In which situations will this code declare that it's a gardening day?

• When the temperature is 62° and the weather is sunny

• When the temperature is 62° and the weather is raining

• When the temperature is 72° and the weather is cloudy

• When the temperature is 72° and the weather is raining

Is the following statement true or false:

The expression a || b will be true if either a or b is true, but not if both are true.

• True

• False