Karel Commands Flashcard

Front

Which of these is a valid Karel command? move, MOVE, move(), move(1)

Back

move()

Answer explanation

The valid Karel command is 'move()' which includes parentheses to indicate a function call.

Front

Which one of these is NOT a command that Karel knows? Turn Left, Turn Right, Move Forward, Put Down a Ball

Back

Turn Right

Answer explanation

The correct choice is 'Turn Right' because it is NOT a command that Karel knows. Karel knows how to Turn Left, Move Forward, and Put Down a Ball.

Front

Does the code putBall(); move(); putBall(); put 2 balls in the same place and then move one place?

Back

False

Answer explanation

The correct answer is False because the code puts two balls in the same place before moving, not moving one ball to a different place.

Front

Karel only knows 4 commands.

Back

True

Answer explanation

The correct answer is True because the question states that Karel only knows 4 commands, which is a true statement.

Front

A grid that karel lives in.

Back

World

Answer explanation

The correct choice is 'World' because it is the grid where Karel lives in.

Front

When is the else block executed in an if-else statement? A. Always, B. Only when the if condition is true, C. Only when the if condition is false, D. Only when there is an error

Back

Only when the if condition is false

Answer explanation

The else block is executed only when the if condition is false, making option C the correct choice.

Front

What is the function of the `if` statement in programming?

Back

To execute a block of code if a specified condition is true

Answer explanation

The function of the `if` statement in programming is to execute a block of code if a specified condition is true.

Front

We use if ... else statement when we have 2 or more conditions

Back

True

Answer explanation

The correct choice is True because if ... else statements are used when there are multiple conditions to be evaluated.

Front

The second part of if, that is executed when the condition is false

Back

else

Answer explanation

The second part of if, that is executed when the condition is false is represented by the 'else' statement.

Front

What is the purpose of an if statement in programming?

Back

To execute a block of code only if a specified condition is true

Answer explanation

The purpose of an if statement in programming is to execute a block of code only if a specified condition is true, making option B the correct choice.