Chapter 5

Question 1

What is the 4 step process in constructing a while loop?

Answer 1

1) Identify the actions that must be repeated in the loop
2) Identify the boolean expression that must be true in order for the while statement to run
3) Assemble the while loop
4) Add additional actions before or after the loop to complete the solution.

Question 2

Define 5 characteristics of a temporary variable

Answer 2

1) Also called local variables
2) Occur inside a method
3) Store a value until the end of the method
4) Have a value type
5) Must be given an initial value

Question 3

Define scope

Answer 3

The region of the program in which a variable may be used

Question 4

Define 4 types of legal expressions

Answer 4

1) Literal values
2) Variables
3) Methods
4) Operators whose operands are legal expressions

Question 5

What loop do you use if a parameter refers to the number of times the loop will execute

Answer 5

a count-down loop or a for loop

Question 6

What loop do you use if the number of times the loop will execute is known before the loop is entered?

Answer 6

A for loop

Question 7

What loop do you use if the loop might execute zero times?

Answer 7

A while loop

Question 8

What loop do you use if the loop has a single test that is relatively simple that appears at the top of the loop?

Answer 8

A while loop

Question 9

What loop do you use if the loop always executes at least once?

Answer 9

A do-While loop

Question 10

What loop do you use if the loop executes an extra half time?

Answer 10

Use a while-true loop

Question 11

What loop do you use if the loop had multiple exit tests?

Answer 11

A while-true loop

Question 12

What is short-circuit evaluation?

Answer 12

if the first evaluation is false in the series of Boolean expressions, it will skip the second expression