Deck 4: The Selection Structure

Question 1

What is the value of the following expression: 9 * 2 - 8 > 5 + 2 / 2?

A)10
B)6
C)False
D)True

Answer 1

D

Question 2

The expression 12 > 0 AndAlso 12 < 10 * 2 evaluates to True.

Answer 2

True

Question 3

Comparison operators are always evaluated after arithmetic operators in a conditional expression.

Answer 3

True

Question 4

When coding a selection instruction in Visual Basic,the code that follows the Else statement includes those instructions that will be executed when the condition is true.

Question 5

The ____ operator is evaluated first in the following expression: 9 * 2 - 8 > 5 + 2 / 2.

A)-
B)+
C)>
D)*

Question 6

You can include an identifying label on a group box by setting the group box's Identity property.

Question 7

If the intInventory variable contains the value 28,the condition If intInventory <= 25 Then will evaluate to ____.

A)Yes
B)No
C)True
D)False

Question 8

The diamond symbol is used in a flowchart for a calculation task.

Question 9

The ____ operator is evaluated last in the following expression: 9 * 2 - 8 > 5 + 2 / 2.

A)-
B)+
C)>
D)*

Question 10

The ____ operator expresses "not equal to."

A)>
B)<>
C)>=
D)<=

Question 11

Which of the following conditions will evaluate to True when the intPackages variable contains the value 100?

A)If intPackages = 100 Then
B)If intPackages <> 0 Then
C)If intPackages > 1 Then
D)All of the above would evaluate to True.

Question 12

The Not operator would make a True statement False,but would not make a False statement True.

Question 13

If dblMiles >= 500 Then dblMiles = dblMiles * 0.45
Else
DblMiles = dblMiles * 0.25
End If
The dblMiles variable contains the number 575 before the code above is processed.What value will be in the variable after the code is processed?

A)0
B)143.75
C)225
D)258.75

Question 14

Use the ____ flowchart symbol to represent the condition in both the selection and repetition structures.

A)oval
B)rectangle
C)parallelogram
D)diamond

Question 15

The And operator always checks both conditions,while the AndAlso operator does not always evaluate the second condition.

Question 16

A programmer must phrase the condition of a selection structure so that it results in either a true or a false answer only.

Question 17

A variable that has ____ scope can be used anywhere within the procedure.

A)block
B)statement
C)method
D)procedure

Question 18

Before using a string in a comparison,you can use either the ToUpper method or the ToLower method to convert the string to uppercase or lowercase,respectively,and then use the converted string in the comparison.

Question 19

The expression 2 * 3 + 1 > 1 * 2 + 3 Or 7 + 2 < 4 + 1 evaluates to False.

Question 20

Comparison operators are also referred to as ____ operators.

A)relational
B)arithmetic
C)logical
D)Boolean

Question 21

Consider the expression 3 * 2 ^ 2 < 16 + 5 AndAlso 100 / 10 * 2 > 15 - 3.Which operation is performed second?

A)^
B)/
C)*
D)+

Question 22

If the intQuantity and decPrice variables contain the numbers 3 and 15.75,respectively,the condition If intQuantity > 0 AndAlso intQuantity < 10 OrElse decPrice > 20 will evaluate to ____.
C)Yes
D)No

Question 23

Which of the following statements assigns the contents of the txtGrade control,in uppercase,to the strGrade variable?

A)If strGrade = txtGrade.Text.ToUpper Then
B)strGrade.ToUpper = txtGrade.Text
C)strGrade = txtGrade.Text.ToUpper
D)txtGrade.Text.ToUpper = strGrade

Question 24

The Backspace key is represented by the ____ constant.

A)ControlChars.Back
B)ControlChars.BackSpace
C)ControlChars.Backspace
D)ControlChars.Backspc

Question 25

In the MessageBox.Show(text,caption,buttons,icon[,defaultButton])method,which of the following arguments controls the symbol appearing in the message box?

A)text
B)caption
C)buttons
D)icon

Question 26

Consider the expression 3 * 2 ^ 2 < 16 + 5 AndAlso 100 / 10 * 2 > 15 - 3.Which operation is performed last?

A)^
B)<
C)>
D)AndAlso

Question 27

With the KeyPress event,use the e parameter's ____ property to cancel the key if it is an inappropriate one.

A)Check
B)KeyEnter
C)KeyChar
D)Handled

Question 28

In the MessageBox.Show(text,caption,buttons,icon[,defaultButton])method,which of the following arguments controls the words appearing in the message box?

A)text
B)caption
C)buttons
D)icon

Question 29

In the MessageBox.Show(text,caption,buttons,icon[,defaultButton])method,which of the following arguments controls the words appearing on the message box title bar?

A)text
B)caption
C)buttons
D)icon

Question 30

You use the ____ method to select all of the text contained in a text box.

A)All
B)SelectAll
C)AllText
D)GetAll

Question 31

Consider the expression 3 * 2 ^ 2 < 16 + 5 AndAlso 100 / 10 * 2 > 15 - 3.Which operation is performed first?

A)^
B)/
C)*
D)+

Question 32

You can use a(n)____ to visually separate related controls from other controls on the form.

A)radio button
B)check box
C)group box
D)icon area

Question 33

To prevent a text box from accepting inappropriate characters,you first use the e parameter's ____ property to determine the key that the user pressed.

A)KeyStruck
B)KeyEnter
C)KeyChar
D)KeyPress

Question 34

Which of the following If clauses would evaluate to True and apply the 10% discount for a commercial customer?

A)If strCustomer <> "C" AndAlso strMember <> "Y"
B)If strCustomer = "C" AndAlso strMember = "Y"
C)If strCustomer <> "R" OrElse strMember = "Y"
D)If strCustomer = "C" OrElse strMember = "Y"

Question 35

Logical operators are sometimes referred to as ____ operators.

A)relational
B)arithmetic
C)comparison
D)Boolean

Question 36

A control's ____ event occurs each time the user presses a key while the control has the focus.

A)PressEnter
B)KeyEnter
C)KeyPress
D)FocusPress

Question 37

The application needs to display a message box to remind the clerk to ask customers to join the Rental Rewards Program when they check out.This message box should only display if the customer is not currently in the program.Which of the following If clauses would evaluate to True and display the message box for the clerk?

A)If strMember <> "Y" Then
B)If strMember = "Y" Then
C)If strMember = "N" Then
D)a and c

Question 38

A text box's ____ event occurs when the text box receives the focus.

A)Focus
B)It
C)Key
D)Enter

Question 39

The ____ method displays a message box that contains text,one or more buttons,and an icon.

A)MessageBox.Display
B)MessageBox.Group
C)MessageBox.Show
D)MessageBox.Output

Question 40

Which of the following has the most limited scope?

A)a variable declared at the beginning of a procedure
B)a variable declared within the true path of a selection structure
C)a static variable declared at the beginning of a procedure
D)a class-level variable

Question 41

Write an If clause to determine whether the dblTemp variable contains a number that is between 65 and 75.

Question 42

Write an If...Then...Else statement that displays the string "Balance Due" in the lblMessage control when the decBalance variable contains a number that is greater than 0; otherwise,assign the string "Thank you for your payment."

Question 43

The button selected by the clerk will determine the next task performed by the computer.The application is using the ____ of the MessageBox.Show method.

A)Boolean value
B)return value
C)selection structure
D)function

Question 44

What is a group box and how is it used?

Question 45

An application needs to display whether or not a student has been accepted to college.The program needs to display either "Accepted" or "Not Accepted".A student must have an SAT score of 1750 or higher and a GPA of 3.3 or higher.Rewrite the following If statement to correct all errors:
If intSAT <= 1750 OrElse decGPA >= 3.3 Then
lblMessage.Text = "Not Accepted"
Else
lblMessage.Text = "Accepted"
End If

Question 46

An application needs to calculate a discount for customers who are either preferred customers or senior citizens.Preferred customers have a discount code of "P".Senior citizens have a discount code of "S".The discount code is stored in the strCode variable.Write an If clause to calculate a discount for all preferred members and senior citizens using the strCode variable.

Question 47

If a customer decides to enroll in the Rental Rewards Program,the Member Information Form displays for the clerk to enter the membership data for the customer.Which of the following statements sends the focus to the txtFirstName control and highlights any text within it?

A)SelectAll(txtFirstName.text)
B)txtFirstName.SelectAll()
C)Focus(txtFirstName.text)
D)txtFirstName.Focus()

Question 48

The message provided when a customer is not a current member of the Rental Rewards Program is "Enroll this customer in the Rental Rewards Program?".The clerk must enter a decision before the application can continue.Which of the message box buttons should be used?

A)OK
B)OKCancel
C)YesNo
D)Information

Question 49

Complete the chart shown below.

Question 50

Write an If...Then...Else statement that assigns the number 2000 to the intBonus variable when the decSales variable contains a number that is greater than or equal to $50,000; otherwise,assign the number 500.

Question 51

Write an If clause to determine whether the user pressed the Backspace key.

Question 52

Write an If clause that will determine if the strColor variable contains either the string "red" or the string "blue".

Question 53

Gino's Subs & Pies wants an application that allows a user to enter a customer's order total and address.When a customer purchases $30 or more of food,Gino's offers free delivery.The delivery fee for all other orders is $10.The calculation should display the total amount the customer owes,including any delivery fee.Draw the flowchart for the solution to this problem.

Question 54

Write a statement that changes the contents of the txtStatus control's text property to uppercase and stores it in the strStatus variable.

Question 55

An application needs to display the message "Please add water" when the amount of water has fallen below the safe limit.Rewrite the following If statement to correct all errors:
If intWaterLimit < intWaterAmount Then
lblWarning = "Please add water"
End If

Question 56

Write a statement that creates a message box that displays an OK button,an Information icon,"Harris Pharmacy" in the title bar,and the message "Please enter a pickup time for your order".

Question 57

List the three most commonly used icons for display in a message box.

Question 58

What is a selection structure? What is the difference between a single-alternative and dual-alternative selection structure?

Question 59

Write an If statement that allows only numbers and a decimal place to be accepted.

Question 60

Your professor wants an application that allows a student to enter two grades and calculate the average of those grades.The application should display the message "Pass" if the average of the grades is 70 or greater.The application should display the message "Fail if the average of the grades is less than 70.Write the pseudocode for the solution to this problem.