Topic 4: Making Decisions

Question 1

Represents only one of two states

Answer 1

Boolean expression

Question 2

Expression evaluates to either true or false

Answer 2

Boolean expression

Question 3

To express Boolean tests when comparing values

Answer 3

Relational comparison operators

Question 4

(Using relational operators) Rule of thumb: Ask the question most likely to have a __________ outcome first

Answer 4

positive

Question 5

(Using relational operators) Rule of thumb: Avoid “_________” when it results in a double negative

Answer 5

not equal

Question 6

Requires that both of two tests evaluate to True

Answer 6

AND decision

Question 7

Requires a nested decision (nested if)

Answer 7

AND decision

Question 8

(Nested AND Decisions) Rule of Thumb: First ask the question that is _____ likely to be true

Answer 8

less

Question 9

Allows you to ask two or more questions (Boolean expressions) in a single comparison

Answer 9

Logical AND operator

Question 10

(OR decisions) Rule of Thumb: First ask the question that is ______ likely to be true

Answer 10

more

Question 11

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

Answer 11

Logical OR operator

Question 12

Compare a variable to a series of values between limits

Answer 12

Range check

Question 13

Should end points of the range include <= or >= ?

Answer 13

Yes; don’t use < or >

Question 14

When AND and OR operators are combined in the same statement, _____ operators are evaluated first

Answer 14

AND

Question 15

Can avoid mixing AND and OR decisions by nesting ____ statements

Answer 15

if