CH02 - Head First Programming JS: MC

What is the primary purpose of Pseudocode in the program development process, as described in the Canvas?

• To write the final, production-ready JavaScript code.

• To convert JavaScript into a compiled language.

• To approximate the real code's logic using plain English descriptions.

• To debug errors in the final application.

In the game's high-level design, what tool is used to represent a decision point, such as checking a user's guess?

• A circle

• A rectangle

• A diamond

• An arrow

The game's three ship locations are stored in variables (location1, location2, etc.). Why does the document state the entire 1x7 grid does not need to be represented in code?

• Because JavaScript automatically creates the grid.

• Because only the ship's locations are necessary to track the hits.

• Because the grid is created by the HTML and CSS.

• Because only the ship's actual cells need to be tracked.

What is the main task performed during the 'Game Setup' phase, which occurs before the main while loop begins?

• Displaying the final user score.

• Prompting the user for their first guess.

• Declaring and initializing variables to hold the game state.

• Checking if the ship has been sunk.

The variable isSunk is initialized to false. When the program finishes, what must its final value be?

• 0

• undefined

• true

• 100

The document mentions that if a variable is declared but not given an initial value (e.g., let guess;), JavaScript assigns it which special default value?

• 0

• undefined

• false

• null

What JavaScript structure is used to implement the pseudocode step: LOOP: while the ship is not sunk?

• An if/else statement.

• A for loop.

• A while statement.

• An alert() call.

The primary method the game uses to get input from the user (a number from 0-6) is the built-in function:

• alert()

• console.log()

• prompt()

• document.write()

What value does the prompt() function return if the user clicks the "Cancel" button in the dialog box?

• The string "Cancel"

• The value null

• The value undefined

• The number 0

What action must occur inside the while loop's code block to prevent the loop from becoming an Infinite Loop?

• A prompt() call must be executed.

• The guesses variable must be incremented.

• The loop's conditional test must eventually be made false.

• An alert() message must be displayed.