Chapter Four

Question 1

Boolean expression

Answer 1

Is one that represents only one of two states usually expressed as true or false

Question 2

If-then Decision Structure

Answer 2

Contains a tested Boolean expression and an action that is taken only when the expression is true.

Question 3

If-then clause

Answer 3

Of a Decision holds the statements that execute when the tested Boolean expression is true.

Question 4

Else clause

Answer 4

Of a Decision holds the statements that execute only when tested Boolean expression is false.

Question 5

Relational comparison operators

Answer 5

Are the symbols that express Boolean comparisons. Examples include =, >, =, <=, and <>.

Question 6

Trivial expression

Answer 6

Is one that always evaluates to the same value.

Question 7

Compound condition

Answer 7

Is constructed when you need to ask multiple questions before determining an outcome

Question 8

AND decsion

Answer 8

Contains two or more decisions all conditions must be true for an action to take place.

Question 9

Nested Decision or a nested If

Answer 9

Is a decision within either the if-then or else clause of another decision.

Question 10

Cascading if Statement

Answer 10

Is a series of nested if statements.

Question 11

Conditional and operator (or more simply and AND operator)

Answer 11

Is a symbol that you use to combine conditions when they all must be true for an action to occur.

Question 12

Truth tables

Answer 12

Are diagrams used in mathematics and logic to help describe the truth of an entire expression based on the truth of its parts.

Question 13

Short circuit evaluation

Answer 13

Is a logical feature in which expressions in each part of a larger expression are evaluated only as far as necessary to determine the final outcome.

Question 14

OR Decision

Answer 14

Contains two or more decisions if at least one condition is met the resulting action takes place

Question 15

Conditional OR operator (or more simply an OR operator)

Answer 15

Is a symbol that you can use to combine conditions when at least one of them must be true for an action to occur.

Question 16

Logical NOT operator

Answer 16

Is a symbol that reverses the meaning of a Boolean expression.

Question 17

Unary operator

Answer 17

Is one that uses only one operand.

Question 18

Range Check

Answer 18

Determines where a variable falls arithmetically when compared to a series of values that mark limiting ends.

Question 19

Dead, or unreachable path

Answer 19

Is a logical path that can never be traveled.