WHILE LOOPS Chapter 3 Console Input and Output

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WHILE LOOPS Chapter 3

WHILE LOOPS Chapter 3

Console Input and Output Input and output interactions with the used are maintained for

Console Input and Output Input and output interactions with the used are maintained for later inspection.

How Did We Get This Box Right click the input: box Click edit

How Did We Get This Box Right click the input: box Click edit

How Did We Get This Box Click the More button Click console and fill

How Did We Get This Box Click the More button Click console and fill in variable and prompt

Console Input and Output Persistent Each line remains in console window To move to

Console Input and Output Persistent Each line remains in console window To move to new line you must use an end of line symbol

LOOPING Used to Perform Same Action Multiple Times

LOOPING Used to Perform Same Action Multiple Times

While Loops Used to repeat actions Condition inside the loop remains true Body Condition

While Loops Used to repeat actions Condition inside the loop remains true Body Condition inside the loop is false Body of the loop executes of the loop does not execute Use a control variable Example Count

Counting Backwards

Counting Backwards

While Loops and Sentinel Values Use when you don’t know the number of iterations

While Loops and Sentinel Values Use when you don’t know the number of iterations The user inputs the end Use a special value (sentinel value) to indicate stop

Grocery Checkout

Grocery Checkout

Determine the Average

Determine the Average

Exit Loop Causes control to jump out of the loop Goes to the statement

Exit Loop Causes control to jump out of the loop Goes to the statement immediately below the loop I am not a big fan of these. You should have another way of exiting the loop. Redesign the code rather than use

Grocery Checkout Using Exit Loop This will be handled very differently in Java

Grocery Checkout Using Exit Loop This will be handled very differently in Java

Redesign the Grocery Checkout Not using the Exit Loop

Redesign the Grocery Checkout Not using the Exit Loop

High-Low Game

High-Low Game

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