Programming Logic and Design, 5th edition. Ch 1- 4

The main components of a computer are?

• Hardware

• Hardware and Software

• Central Processing Unit (CPU) and Software

1. What is a flag variable?

• A flag is a variable signal that sets to False

• A flag is a variable that signals when some condition exists in the program.

• A flag is a variable signal that sets to True

• A flag is a variable that signals when some condition starts in the program

1. What values can you store in a Boolean variable?

• True or False

• Yes or No

• Fact or Fiction

You need to write a multiple alternative decision structure, but the language you are using will not allow you to perform the test you need in a Select Case statement. What can you do to achieve the same results?

• the program jumps out of the structure.

• the program will branch to the Case 1: section and execute the Display "Error: Invalid month" statement that immediately follows it.

• the program branches to the Case statement

• the program branches to the Default statement and executes the statements that immediately follow it.

What does the case structure test, in order to determine which set of statements to execute?

• test If the testExpression does not match any of the Case values

• test if there is one or more blocks of statements that begin with a Case statement.

• test the value of a variable or an expression and then use that value to determine which statement or set of statements to execute.

• tests if the model number can be stored in a variable

How do you write a multiple alternative decision structure in pseudocode?

• 
• 
• 
• 

1. How does a dual alternative decision structure work?

• is an expression that can be evaluated to True or False using a relational operator (>, <, >=, <=, ==, !=)

• one path is taken if a condition is true, and the other path is taken if the condition is false

• One path is taken if the condition evaluates True, the other if the condition evaluates False. See the answer to 4.8. It's the same question!

When you write an If-Then-Else statement, under what circumstances do the statements that appear between Else and End If execute?

• If the expression is false

• If the expression is true

1. What statement do you use in pseudocode to write a dual alternative decision structure?

• If Else

• Else If

• Else

• If-Then-Else

How does a dual alternative decision structure work?

• a decision structure will execute one group of statements if its Boolean expression is true, or another group if its Boolean expression is false.

• is any Boolean expression. If the expression is true, the statements that appear next are executed, up to the line that reads Else.

• two possible paths of execution—one path is taken if a condition is true, and the other path is taken if the condition is false