Java Programming

Which example shows the correct syntax for a while loop?

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• 
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Answer explanation

This is the correct example. It is important to have a trigger to exit out of a loop.

In the following code, which line numbers are in scope for the favoriteNumber variable?

• 3, 4

• 1, 2

• 1, 2, 3

• 1, 2, 3, 4

Answer explanation

Since the variable is declared inside the `if` statement, it is only available in lines 1 and 2 before the closing curly bracket is seen.

If the value of inputtedNum is 6, then what is the output of the following code?

• <no output>

• The sun will shine bright

• The moon will glow bright

• Error

Answer explanation

The value `6` would make the `if` condition false, so the code under the `else` statement would be executed.

Which control flow statement is represented by a diamond shape in a flowchart diagram?

• while

• if

• do while

• None

Answer explanation

A diamond shape is represented by the `if` statement in Java.

How would you best describe what control flow statements do in a program?

• They can cause a block of code to be executed after a program terminates abnormally.

• They can cause a block of code to be executed once, multiple times, or not at all.

• They can cause a block of code to be executed line by line in sequential order.

• They may cause Errors

Answer explanation

Control flow statements allow code to be executed in different ways besides the default sequential order.

How would you describe a while loop?

• Check the condition; if it is true, then run a code block. Otherwise, run a different code block.

• Check whether the condition is true; if it is true, then keep repeating until the condition is false.

• Run a block of code and then check the condition; if the condition is true, then repeat the block of code.

Answer explanation

A `while` loop keeps repeating a block of code as long as the condition evaluates to a true value.

Given a symbol in each question, choose the best answer.

• Represents a decision-making point

• Represents arithmetic operations and data manipulations

• Represents the start and the end of a flowchart

• Represents the flow of the algorithm

• Input-Output

Answer explanation

That is Correct

It Represents a decision-making point- Usually has flow lines coming out after it, representing the decision paths for each alternative (e.g., YES, NO)

Given a symbol in each question, choose the best answer.

• Represents a decision-making point

• Represents arithmetic operations and data manipulations

• Represents the start and the end of a flowchart

• Represents the flow of the algorithm

• Input-Output

Answer explanation

That is Correct

- Represents the start and the end of a flowchart- A flowchart should always start with and end with a symbol like this

Given a symbol in each question, choose the best answer.

• Represents a decision-making point

• Represents arithmetic operations and data manipulations

• Represents the start and the end of a flowchart

• Represents the flow of the algorithm

• Input-Output

Answer explanation

That is Correct

It is used to represent a single step or action- Usually represents arithmetic operations and data manipulations- Most common flowchart symbol

Given a symbol in each question, choose the best answer.

• Represents a decision-making point

• Represents arithmetic operations and data manipulations

• Represents the start and the end of a flowchart

• Represents the flow of the algorithm

• Input-Output

Answer explanation

That is Correct

it is used for input and output processes