AP CSP Boolean Logic 4

Given the procedure:

What will be displayed after the following statement is executed?

DISPLAY ( adjustCount (9) + adjustCount (16) )

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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

A programmer named Johnny has a programming style in which he does not like to indent his code. Here is an example of a procedure Johnny recently created.

It is supposed to return "ELEPHANT" if the type of animals is "E", "GIRAFFE" if the type of animal is "G" and the height is "TALL", or "GORILLA" if the type of animal is "G" and the height is "AVERAGE". If none of these conditions are true, then return "UNKNOWN".

Does this procedure always return the correct animal as specified above?

• Yes, this procedure returns the correct value for all test cases.

• No, this procedure will not return the correct value if the animal type is "G" and height is "AVERAGE".

• No, this procedure will not return the correct value if the animal type is "E" and height is "AVERAGE".

• No, this procedure will not return the correct value if the animal type is "G" and height is "TALL".

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?

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The diagram below shows a circuit with three gates, where the output from two AND gates are sent into an OR gate. The circuit has four inputs (A, B, C, D), two for each AND gate.

If the final output is 0, what is a possible state of the inputs A/B/C/D?

• A = 0, B = 0, C = 0, D = 0

• A = 1, B = 1, C = 0, D = 1

• A = 0, B = 1, C = 1, D = 1

• A = 1, B = 0, C = 1, D = 1

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."

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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."

• 
• 
•