chapter 4 review

If you could use only three relational comparison operators, you could get by with ______

b. equal to, less than, and greater than

The Boffo Balloon Company makes helium balloons in three sizes, 12 colors, and with a choice of 40 imprinted sayings. As a promotion, the company is off ering a 25 percent discount on orders of large, red "Happy Valentine's Day" balloons. To most efficiently select the orders to which a discount applies, you would use ______

b. nested if statements using AND logic

The selection statement if quantity > 100 then discountRate = RATE is an example of a ______

b. single-alternative selection

The Midwest Sales region of Acme Computer Company consists of fi ve states—Illinois, Indiana, Iowa, Missouri, and Wisconsin. About 50 percent of the regional customers reside in Illinois, 20 percent in Indiana, and 10 percent in each of the other three states. Suppose you have input records containing Acme customer data, including state of residence. To most efficiently select and display all customers who live in the Midwest Sales region, you would ask first about residency in ______

a. Illinois

If a > b is false, then which of the following is always true?

a. a <= b

If a is true, b is true, and c is false, which of the following expressions is true?

a. a OR b AND c b. a AND b AND c d. two of the above C. a AND b OR c

All selection statements must have ______

a. a then clause

Th e selection statement if dayOfWeek = "Sunday" then price = LOWER_PRICE else price = HIGHER_PRICE is an example of a ______

a. dual-alternative selection

If d is true, e is false, and f is false, which of the following expressions is true?

a. e OR f AND d b. f AND d OR e d. two of the above C. d OR e AND f

If sales = 100, rate = 0.10, and expenses = 50, which of the following expressions is true?

a. sales >= expenses AND rate < 1 b. sales < 200 OR expenses < 100 c. expenses = rate OR sales = rate D. TWO OF THE ABOVE

Usually, you compare only variables that have the same ______

a. type

In the following pseudocode, what percentage raise will an employee in Department 8 receive? if department < 5 then raise = SMALL_RAISE else if department < 14 then raise = MEDIUM_RAISE else if department < 9 raise = BIG_RAISE endif endif endif

b. MEDIUM_RAISE

In the following pseudocode, what percentage raise will an employee in Department 5 receive? if department < 3 then raise = SMALL_RAISE else if department < 5 then raise = MEDIUM_RAISE else raise = BIG_RAISE endif endif

c. BIG_RAISE

Symbols such as > and < are known as ______ operators

c. relational comparison

The Boffo Balloon Company makes helium balloons. Large balloons cost $13.00 a dozen, medium-sized balloons cost $11.00 a dozen, and small balloons cost $8.60 a dozen. About 60 percent of the company's sales are of the smallest balloons, 30 percent are medium, and large balloons constitute only 10 percent of sales. Customer order records include customer information, quantity ordered, and size. To write a program that makes the most effi cient determination of an order's price based on size ordered, you should ask first whether the size is ______

c. small

An expression like amount < 10 is a(n) ______ expression

d. Boolean

Which of the lettered choices is equivalent to the following decision? if x > 10 then if y > 10 then output "X" endif endif

d. if x > 10 AND y > 10 then output "X"

In the following pseudocode, what percentage raise will an employee in Department 10 receive? if department < 2 then raise = SMALL_RAISE else if department < 6 then raise = MEDIUM_RAISE else if department < 10 raise = BIG_RAISE endif endif endif

d. impossible to tell

When you use a range check, you compare a variable to the ______ value in the range

d. lowest or highest

Usually, the most diffi cult comparison operator to work with is ______

d. not equal to