Chapter 6

Question 1

What is a iteration?

Answer 1

one execution of a loop

Question 2

What is a definitive loop?

Answer 2

• Also called counted loop
• Programmer knows exact number of iterations

Question 3

What is a indefinite loop?

Answer 3

• Programmer cannot predict number of iterations
• Event controlled loop
• Altered by user input
• Controlled by by the user
• Executed any number of times

Question 4

When do you need curly braces?

Answer 4

When you have more then one statement

Question 5

How is data validated?

Answer 5

• Ensuring a value falls within a specified range
• Use indefinite loops to validate input data
• If a user enters incorrect data, the loop repeats

Question 6

What is a priming read?

Answer 6

• Input retrieved before the loop is entered
• Within a loop, the last statement retrieves the next input value and checks the value before the next entrance of the loop

Question 7

When do you use the prefix or postfix incriment operator?

Answer 7

• Use only with variables
• Unary operators
• Use with one value
• Increase a variables value by 1
• No difference between operators (unless other operators are in the same expression)

Question 8

How does prefix++ calculate?

Answer 8

• The result is calculated and stored
• Then the variable is used

Question 9

How is postfix++ calculated?

Answer 9

• The variable is used
• Then the result is calculated and stored

Question 10

What is a pretest loop?

Answer 10

loop in which the variable is tested before the loop body executes

Question 11

What is a postest loop?

Answer 11

loop in which the variable is tested after the loop body executes