Chapter 4

Question 1

Boolean expressions can only be

Answer 1

True or False

Question 2

if-then-else decision is used for

what does the if-then expression holds

what does the else expression holds

Answer 2

selection structure

if-then holds the actions that execute when statement is true

else executes when condition is false

Question 3

relational comparison operators are the

Answer 3

equal sign (=)

greater than sign (>)

less than sign (<)

greater than or equal to sign (>=)

less than or equal to sign (<=)

not equal to sign (<>)

Question 4

trivial expressions

Answer 4

will evaluate same results

EX: 20=20

Question 5

compound condition

Answer 5

ask multiple questions before outcome is determined

Question 6

AND decision

Answer 6

requires both test to be true

requires a nested decision or a cascading if statement

Question 7

instead of nesting decisions, you can use an

Answer 7

conditional AND statement

Question 8

when nesting decisions, ask the question that

Answer 8

fails first

Question 9

Conditional AND operator

Answer 9

asks 2 or more questions in a decision statement

each boolean expression must be true for entire expression to be true

Question 10

truth table

Answer 10

diagrams that describe truth of an entire expression

Question 11

short circuit evaluation

Answer 11

expression evaluated only as far as necessary to determine truth

Question 12

Or decision

Answer 12

take action when one of the many conditions are true

Only one boolean expression must be true to produce a result of true

Question 13

Not operator

Answer 13

reverses the meaning of a boolean expression (if not true, then its false/if not false, then its true)

Question 14

range check

Answer 14

compare a variable to a series of values between limits (an interval)

Question 15

if you want all conditions to be true, use what expression

Answer 15

the AND expression