Deck 8: String Manipulation

Question 1

The following instruction will remove which character from the string first? Dim myString as string = "ABCDEFGH"
MyString = myString.Remove(2,3)

A)A
B)B
C)C
D)D

Answer 1

C

Question 2

Neither the Trim method nor the Remove method removes any characters from the original string.

Answer 2

True

Question 3

Assume that a text box named PhoneNumberTextBox appears on a form and contains the phone number 414-555-5555.What value will display for the length of the phone number text box?

A)10
B)12
C)18
D)20

Answer 3

B

Question 4

To remove characters from the left of,the right of,or within a string variable,you should use the ____ function.

A)Mid
B)Delete
C)Trim
D)Remove

Question 5

The most commonly used properties for a menu element are the Name and Text properties.

Question 6

You can use a string's Value property to determine the number of characters it stores.

Question 7

You should assign shortcut keys to every menu item.

Question 8

The ____ method pads the string on the right,which inserts the padded characters at the end of the string and left-aligns the characters within the string.

A)PadEnd
B)PadRight
C)Padding
D)PadAll

Question 9

The ____ method inserts the padded characters at the beginning of a string,which right-aligns the characters within the string.

A)PadStart
B)PadRight
C)PadBegin
D)PadLeft

Question 10

Each menu in an application does not have to contain a menu title.

Question 11

When processing the PadLeft and PadRight methods,the computer makes a temporary copy of the string in memory,and then inserts the characters in the copy only.

Question 12

How many characters will be removed from the string below? Dim myString as string = "ABCDEFGH"
MyString = myString.Remove(2,3)

A)one
B)two
C)three
D)four

Question 13

A character's ____ is an integer that indicates the character's position in the string.

A)charpos
B)index
C)chardex
D)pos

Question 14

If an application expects the user to enter a seven-digit phone number or a five-digit ZIP code,the application's code should verify that the user entered the required number of characters.

Question 15

Menu title captions should be one word only and entered using uppercase letters.

Question 16

The Trim method is used to remove characters only from the end of a string.

Question 17

The ____ method performs a case-sensitive search that returns the Boolean value True when the subString is contained anywhere in the string.

A)Insert
B)IndexOf
C)Contains
D)Substring

Question 18

To insert characters within a string,you use the ____ method.

A)Add
B)Insert
C)Mid
D)IndexOf

Question 19

You can use the ____ method to search a string to determine whether it contains a specific sequence of characters.

A)Contains
B)Insert
C)Substring
D)IndexOf

Question 20

A literal type character forces a literal constant to assume a data type other than the one its form indicates.

Question 21

The ____ operator evaluates to True when the string matches the pattern; otherwise,it evaluates to False.

A)Like
B)Menu
C)Add
D)Insert

Question 22

If a menu item requires additional information from the user,the Windows standard is to place a(n)____ at the end of the caption.

A)underscore (_)
B)asterisk (*)
C)pound key (#)
D)ellipsis (…)

Question 23

The ____ method returns an integer that represents the location of the subString within the string.

A)Insert
B)IndexOf
C)Contains
D)Substring

Question 24

Visual Basic provides the ____ method for accessing any number of characters contained in a string.

A)IndexOf
B)Insert
C)Contains
D)Substring

Question 25

To remove characters from only the beginning of a string,use the ____ method.

A)Trim
B)TrimBegin
C)TrimStart
D)TrimLeft

Question 26

In order to remove both dashes from the SSN,you should first ____.

A)use the Length property to see how many characters are in the variable
B)use the index value to loop to examine each character in the variable, character by character
C)use the Contains method to see if any dashes are anywhere within the variable
D)use the Insert method to insert dashes

Question 27

The method that removes characters from only the right end of a string is the ____ method.

A)Trim
B)TrimRight
C)TrimEnd
D)TrimR

Question 28

Each menu element is considered a(n)____ and has a set of properties associated with it.

A)class
B)character
C)object
D)string

Question 29

What is the value returned from the expression stateName.Substring(1,1)when stateName contains "North Dakota"?

A)N
B)o
C)t
D)a

Question 30

The users of the HR application have entered some employee Social Security numbers (SSNs)with dashes (such as 222-33-4444)and some without dashes (such as 222334444).You need to remove all dashes from any SSN that contains dashes.You will use the ____ method to edit the code so that only numeric characters are stored.

A)Replace
B)Remove
C)Trim
D)Substring

Question 31

Assume that the data for salary is entered with both a dollar symbol and a space.Which of the following instructions will remove the dollar symbol?

A)salary.TrimStart("$")
B)salary.TrimLeft("$")
C)salary.TrimEnd("$")
D)salary.TrimRight("$")

Question 32

In Visual Basic 2015,you use a(n)____ to include one or more menus in an application.

A)Like operator
B)Contains method
C)Insert operator
D)MenuStrip control

Question 33

Which of the following shortcut keys should not be used in Windows applications that have an EDIT menu for menu items not on the EDIT menu?

A)Ctrl+X
B)Ctrl+Q
C)Ctrl+V
D)both a and c

Question 34

Assume that the value of the string message is "Happy New Year".What value would message.IndexOf("New")yield?

A)-1
B)2
C)6
D)7

Question 35

Programmers use the ____ property of the menu element to refer to the menu element in code.

A)Text
B)Name
C)Description
D)Title

Question 36

____ keys appear to the right of a menu item and allow you to select an item without opening the menu.

A)Shortcut
B)Access
C)Menu
D)Caption

Question 37

The strPhone variable should contain only numbers and no dashes (-).An error message should display if there is a dash anywhere in the variable.Which of the following statements determines whether the variable contains a dash in order to display the message?

A)If strPhone.Contains("-") = True Then
B)If strPhone.Contains("-") = False Then
C)If strPhone Like "-" Then
D)If strPhone.Contains(#######) = False Then

Question 38

The ____ allows you to use pattern-matching characters to determine whether one string is equal to another string.

A)Insert method
B)Like operator
C)Contains method
D)MenuStrip control

Question 39

The strPassword variable contains eight characters.Two of the characters in the password must be numeric.Which of the following statements will access each character stored in the variable,character by character?

A)If strPassword Like "[A-Z][A-Z][A-Z][A-Z][A-Z][A-Z]##"
B)For intIndex As Integer = 0 To 7
C)For intIndex As Integer = 1 To 8
D)For intIndex As Integer = 1 To strPassword.Length - 1

Question 40

The strState variable should contain two uppercase letters.Which of the following statements determines whether the variable contains a valid state?

A)If strState = "[A-Z][A-Z]" Then
B)If strState Like "[A-Z]" Then
C)If strState Like "[a-z][a-z]" Then
D)If strState Like "[A-Z][A-Z]" Then

Question 41

The strSerialNum variable contains the string "DRY259614".Write the Visual Basic statement that assigns the string "259614" from the strSerialNum variable to the strProductCode variable.

Question 42

What is the difference between a menu item's access key and shortcut key?

Question 43

Write a Visual Basic statement that will access each character in the strNumber variable to determine if the variable contains a comma and then removes any comma that is found.

Question 44

Write the Visual Basic statement that inserts "RVI" at the beginning of the string in the following strPolicyNum and assigns it to the strPolicyNum variable.
strPolicyNum = "576892"

Question 45

Write the Visual Basic statement that uses the Contains method to determine whether the strEmployeeCode variable contains the string "NC" (entered in uppercase).Assign the method's return value to a Boolean variable named blnIsNC.

Question 46

Write the condition that evaluates to True when a dash (-)appears anywhere within the strItemNum variable.

Question 47

The txtGrade control contains the string "95%".Write the Visual Basic statement to remove the percent sign from the txtGrade control as well as convert the contents of the control to a Decimal number.Assign the result to the decGrade variable.Use the TrimEnd method.

Question 48

Private Sub btnDisplay_Click(ByVal sender As Object,ByVal e As System.EventArgs)Handles btnDisplay.Click
' displays a pay rate based on an employee's code
' Full Time employee pay rate is 11.50.Part Time
' employee pay rate for those working more than 30 hours
' is 10.50,otherwise it is 9.50
Dim strEmpCode As String
Dim decPayRate As Integer
strCode = txtEmpCode.Text.Snip
' validate the employee code
If strEmpCode = "FT##" Then
decPayRate = 11.50
ElseIf strEmpCode Like "PT30##" Then
decPayRate = 9.50
Else
decPayRate = 10.50
End If
' display pay rate
lblPayRate.Text = decPayRate.ToString("N2")
End Sub

Question 49

The strCityState variable contains the string "AtlantaGA".Write the Visual Basic statements that assign the string "Atlanta" from the strCityState variable to the strCity variable,and assign the string "GA" to the strState variable.

Question 50

Each employee is assigned an employee code,such as F01234,which is stored in the strEmpCode variable.The first character is a letter for employment status (F for Full-time,P for Part-time).The next two characters are numbers representing the employee's department number.The last three characters are numbers representing a unique value for each individual employee.Which of the following statements assigns the employee's department to the strDept variable?

A)strDept = strEmpCode.Substring(0, 1)
B)strDept = strEmpCode.Substring(1)
C)strDept = strEmpCode.Substring(0, 2)
D)strDept = strEmpCode.Substring(1, 2)

Question 51

The strPhone variable contains a 10-digit phone number.If the string stored in the strPhone variable begins with the "336" area code,display the phone number in the lblPhone control's Text property.Use the StartsWith method.

Question 52

Write a Visual Basic statement that removes the last four digits of the credit card number and assigns it to the strCCLastFour variable.
strCCNum = "4456778996352852"

Question 53

Write the Visual Basic statements needed to format decNetPay with two decimal places,pad the formatted variable with asterisks until its length is 12,and then insert a dollar sign ($)as the first character.The result is assigned to the strNetPayFormat variable.

Question 54

The strCityState variable contains a string that ends with a two-digit state abbreviation.Write the statements that determine whether the string stored in the strCityState variable ends with "NY".If it does,assign the string "New York order" to the lblState control's Text property.Use the EndsWith method.

Question 55

Write the condition that evaluates to True when the string stored in the strCode variable begins with "HFS",followed by two uppercase letters,followed by five numbers.

Question 56

Write the Visual Basic statement to assign the number of characters in the txtSSN control's Text property to the intSSNNumChar variable.

Question 57

Describe four of the six menu standards that should be followed when including a menu in an application.

Question 58

The application needs to process benefits for full-time employees only.Which of the following statements determines whether the strEmpCode variable contains an employee code for a full-time employee?

A)If strEmpCode Like "[A-Z]#####"
B)If strEmpCode.ToUpper Like "F####"
C)If strEmpCode Like "F*"
D)If strEmpCode Like "!F*"

Question 59

The HR department has decided to change the Finance department number from 04 to 09.Which of the following statements correctly changes the contents of the strEmpCode?

A)strEmpCode = strEmpCode.Replace("04", "09")
B)strEmpCode = strEmpCode.Replace("09", "04")
C)strEmpCode = strEmpCode.Remove(0, 2)strEmpCode = strEmpCode.Insert(1, "09")
D)strEmpCode = strEmpCode.Remove(1, 2)strEmpCode = strEmpCode.Insert(1, "04")

Question 60

Private Sub btnDisplay_Click(ByVal sender As Object,ByVal e As System.EventArgs)Handles btnDisplay.Click
' displays type of vehicle for the code entered by user
Const strLENGTH_MSG As String = "The code must contain four characters."
Const strTYPE_MSG As String = "The last character in the code must be C,T,or V."
Dim strCode As String
Dim strLastChar As String
strCode = txtCode.Text.ToLower
' determine whether code contains exactly 4 characters
If strCode.Chars < 4 Then
lblType.Text = String.Empty
MessageBox.Show(strLENGTH_MSG,"Code",
MessageBoxButtons.OK,
MessageBoxIcon.Information)
Else
' determine whether the last character is valid
strLastChar = strCode.Substring(4)
Select Case strCode
Case "C"
lblType.Text = "Car"
Case "T"
lblType.Text = "Truck"
Case "V"
lblType.Text = "Van"
Case Else
lblType.Text = String.Empty
MessageBox.Show(strType_MSG,"Type",
MessageBoxButtons.OK,
MessageBoxIcon.Information)
End If
End If
End Sub