Deck 5: More on the Selection Structure

Question 1

A meat packer grades meat "P" for Prime,"C" for Choice,"S" for Standard,and "G" for Good.Which of the following Case expressions is incorrect?

A) Case "P","C"
B) Case "S"
C) Case "CGSP"
D) Case Else

Answer 1

C

Question 2

In a Case selection structure,each expression in an expression list is separated by a ____.

A) semicolon (;)
B) colon (:)
C) period (. )
D) comma (,)

Answer 2

D

Question 3

Reversing the primary and secondary logical decisions when writing a selection structure that contains a nested selection structure has no impact on the program's execution.

Answer 3

False

Question 4

In a nested selection structure,the primary decision is always made by the outer selection structure.

Question 5

When a user selects a second CheckBox in a group,previously selected CheckBox items are deselected.

Question 6

The minimum number of radio buttons in a group is one.

Question 7

You can hide a control on a form while an application is running by changing the Visible property from False to True.

Question 8

Desk-checking is also called ____.

A) prototyping
B) hand-tracing
C) alpha checking
D) beta checking

Question 9

The default radio button is designated by setting the Checked property to a value of True.

Question 10

The condition in a multiple-path selection structure is represented by a ____ in a flowchart.

A) diamond
B) square
C) circle
D) rectangle

Question 11

Programmers desk-check an algorithm to verify that it is not missing any steps,and that the existing steps are correct and in the proper order.

Question 12

A selection structure that can choose from several alternatives is called a(n)____ selection structure.

A) dynamic
B) complex
C) secondary
D) extended

Question 13

When either a selection structure's true path or its false path contains another selection structure,the inner selection structure is referred to as a ____ selection structure.

A) complex
B) primary
C) nested
D) combined

Question 14

An unnecessary selection structure within a nested selection structure will make the program inefficient.

Question 15

When the Select Case statement includes a Case ____ clause,this clause must be the last clause in the statement.

A) Otherwise
B) Else
C) Next
D) Last

Question 16

In a nested selection structure,the ____ decision is always made by the outer selection structure.

A) primary
B) secondary
C) binary
D) linear

Question 17

In a nested selection structure,the ____ decision is always made by the inner selection structure.

A) primary
B) secondary
C) binary
D) linear

Question 18

The If/ElseIf/Else selection structure needs only one End If statement to mark the end of the selection structure.

Question 19

The Select Case statement ends with the ____ clause.

A) End
B) End Case
C) End Select
D) Select End

Question 20

In a Case selection structure,the expression Case Is 10 To 5 would be an incorrectly formed case statement.

Question 21

If the intQuantity variable contains the number 10 and the customer is a member,what value will be in the decTotal variable after the code is processed?

A) 0
B) 125
C) 140
D) 150

Question 22

When the programmer wants to limit the user to one choice during input of mutually exclusive options,the ____ control should be used.

A) TextBox
B) CheckBox
C) RadioButton
D) Label

Question 23

After creating a Random object,you can generate random integers using the ____ method.

A) Random.Call
B) Random.Number
C) Random.Generate
D) Random.Next

Question 24

If the intQuantity variable contains the number 20 and the customer is a member,what value will be in the decTotal variable after the code is processed?

A) 187.50
B) 250
C) 280
D) 300

Question 25

If the txtBalance control contains the value $52,what value will the Decimal.TryParse(txtBalance.Text,decBalance)method return?

A) True
B) False
C) 52
D) 0

Question 26

If the intQuantity variable contains the number 25 and the customer is not a member,what value will be in the decTotal variable after the code is processed?

A) 0
B) 312.50
C) 350
D) 375

Question 27

The ____ event occurs each time you select or deselect a check box or radio button.

A) Checked
B) Changed
C) CheckedChanged
D) ChangedChecked

Question 28

You create the Random object by declaring it in a ____ statement.

A) Get
B) Dim
C) Sub
D) Private

Question 29

An online bookseller uses the following schedule to determine the shipping costs: What is a correct case expression for a category II book order based upon Books Ordered?

A) Case Is < 7
B) Case 4 To 7
C) Case Is 4 To 7
D) Case Between 4 and 7

Question 30

In a Case selection structure,you use the ____ keyword when you know both the upper and lower bounds of the range.

A) From
B) Is
C) To
D) Range

Question 31

Which of the following would be an appropriate use of a check box control?

A) Marital Status (Married,Single)
B) Gender (Female,Male)
C) Full Time - Part Time
D) Insurance Benefits (Health,Dental,Vision)

Question 32

A selection structure's true path should calculate the ending inventory value only when the price entered by the user can be converted to a number.Which statement will return a Boolean value of True and store it in blnPriceOK if the number can be converted?

Question 33

In a Case selection structure,you use the ____ keyword when you know only one end of the range.

A) From
B) Is
C) To
D) Range

Question 34

The application needs to assign the fee for folded clothes.The primary decision for the scenario is to first determine ____.

A) whether the customer is having a shirt,or pants,or a dress cleaned
B) when the customer will pick up the clothes
C) if the customer wants clothes hung or folded
D) if the customer wants clothes washed or dry cleaned

Question 35

The maximum number of radio buttons that can be selected from a group is ____.

A) one
B) three
C) five
D) seven

Question 36

Which of the following conditions will evaluate to True when the chkValidID check box is not selected?

Question 37

The secondary decision for assigning the fee for folded clothes is to determine ____.

A) whether the customer is having a shirt,or pants,or a dress cleaned
B) when the customer will pick up the clothes
C) if the customer wants clothes hung or folded
D) if the customer wants clothes washed or dry cleaned

Question 38

When a check box is selected,its Checked property contains the ____.

A) Boolean value True
B) Boolean value False
C) numeric value 0
D) numeric value 1

Question 39

When the programmer wants to allow the user to select any number of choices from a group of one or more independent and nonexclusive choices,the ____ control should be used.

A) TextBox
B) CheckBox
C) RadioButton
D) Label

Question 40

You enter the label for a radio button using sentence capitalization in the radio button's ____ property.

A) Text
B) Label
C) Face
D) Heading

Question 41

An application needs to generate a random number that is greater than or equal to 1 but less than 348.Write the statements to generate the random number and assign it to the intNum variable.

Question 42

Write a multiple-alternative selection structure that displays the name of an instructor based on the class section entered by the user.The class section is stored (as uppercase)in the strSection variable.Display "Edwards" when the class section is A.Display "Hughes" when the class section is B.Display "Meadows" when the class section is C.For all other sections,display "To Be Announced".Display the message in the lblMessage control.Use the If/ElseIf/Else form of the If...Then...Else statement.

Question 43

You meet with the manager to show her the interface and obtain feedback.She tells you that very few customers request dry cleaned clothes to be folded.She suggests only applying the folding fee if a customer makes a special request,and it should be calculated for all laundered items in a customer's order.You decide to make the folding fee ____.

A) a single radio button and remove it from the nested selection structure
B) a single check box and remove it from the nested selection structure

Question 44

An application needs to generate three random numbers that can be from 1 to 9.The random numbers will be assigned to variables named intNum1,intNum2,and intNum3.Write the necessary statements to generate the random numbers and store them in their respective variables.The following Dim statements are provided:

Question 45

Write a multiple-alternative selection structure that displays the name of an instructor based on the class section entered by the user.The class section is stored (as uppercase)in the strSection variable.Display "Edwards" when the class section is A.Display "Hughes" when the class section is B.Display "Meadows" when the class section is C.For all other sections,display "To Be Announced".Display the message in the lblMessage control.Use the Select Case statement.

Question 46

Write a multiple-alternative selection structure that assigns an interest rate (.04,.05,.06)to the decInterestRate variable.The appropriate rate depends on the radio button selected by the user in the interface.The names of the radio buttons are rad4Rate,rad5Rate,and rad6Rate.Use the Select Case statement.

Question 47

Write a multiple-alternative selection structure that determines the shipping charge based on the total order amount entered by the user.The shipping charge is stored in the intShipCharge variable.The total order amount is stored in the decTotalOrder variable.The shipping charge is $9 for all orders under $25.The shipping charge is $8 for all orders of $25 to $50.The shipping charge is $7 for all orders where the total order amount is greater than $50.If the user does not enter a valid total order amount (less than 0),display "Please enter a valid amount." in the lblMessage control.Use the Select Case statement.

Question 48

Write an If...Then...Else statement that assigns a discount of $5 when a customer provides a coupon during checkout.If the customer does not provide a coupon,then there is no discount.The clerk must select the Coupon Provided check box for the customer to receive the discount.Create your own variable names.

Question 49

Write the TryParse statement that will convert the string stored in the txtBalance control to a Decimal number.The Decimal number should be stored in the decBalance variable,and the Boolean value that is returned should be stored in the blnIsNumber variable.

Question 50

Colin is renting an automobile to take on vacation to the mountains.He would like to rent an SUV or a truck,but he would prefer an SUV for the covered storage.However,he does not know if there are any SUVs or trucks at the rental location where he lives.If there is not an SUV or a truck to rent,he will have to rent a car.He is going to call a rental agent and inquire about the available automobiles.Write an algorithm for this scenario.

Question 51

BounceIt Gymnasium needs an application to calculate the fee for hosting a party.The fee is based on the number of guests.The fee structure is provided below.
Write a multiple-alternative selection structure that assigns the appropriate fee to intFee based on the number of guests stored in the intNumGuests variable.Use the Select Case statement.

Question 52

What is a nested selection structure? How do primary and secondary decisions relate to a nested selection structure?

Question 53

A group of ____ should be used on the interface for the user to select the customer's preference for washing or dry cleaning the clothes.

A) radio buttons
B) check boxes
C) text boxes
D) labels

Question 54

Define the term "algorithm." How is desk-checking used to verify algorithms?

Question 55

Ocean Resorts,Inc.pays a commission to employees based on an employee's sales and the number of years the employee has been with the company.Employee sales is stored in the decSales variable,and the number of years employed is stored in the intYears variable.The application should calculate the commission for an employee.The commission is 6% for sales of at least $100,000.If an employee's sales total is less than $100,000,the employee will receive a 3% commission if he or she has been with the company for two years or more.Otherwise,the employee does not receive a commission.Assign the commission to the decCommission variable.Write an If...Then...Else statement for the nested selection structure.

Question 56

The interface provides a text box for the user to enter the number of shirts being laundered.You want to make sure a string typed in by the user can be converted to a number to be used in the calculation for the total.Which of the following statements is valid?