Question 1

Which is the correct way to define a function named Square that receives an integer and returns an integer representing the square of the input value?

Accepted Answer

A)  Function Square(ByVal intNum as Integer) As Integer Return
 intNum * intNum
End Function 
B)  Function Square(ByVal intNum as Integer) 
Return intNum * intNum
End Function 
C)  Function Square(ByVal intNum as Integer) As Double
 Return intNum * intNum
End Function 
D)  Function Square(ByVal intNum as Integer) As Double 
Dim dblAns as Double
DblAns = intNum * intNum
Return dblAns
End Function 
A)  Function Square(ByVal intNum as Integer) As Integer Return
 intNum * intNum
End Function 
B)  Function Square(ByVal intNum as Integer) 
Return intNum * intNum
End Function 
C)  Function Square(ByVal intNum as Integer) As Double
 Return intNum * intNum
End Function 
D)  Function Square(ByVal intNum as Integer) As Double 
Dim dblAns as Double
DblAns = intNum * intNum
Return dblAns
End Function

Question 2

What is wrong with the following GetName procedure? 
Sub GetName(ByVal strName As String)
StrName = InputBox("Enter your Name:")
End Sub

Accepted Answer

A)  The procedure is missing a Return statement. 
B)  GetName is a reserved word and cannot be used as a name of a procedure. 
C)  strName will be modified, but all changes will be lost when the procedure ends. 
D)  The syntax for the call to InputBox is incorrect. 
A)  The procedure is missing a Return statement. 
B)  GetName is a reserved word and cannot be used as a name of a procedure. 
C)  strName will be modified, but all changes will be lost when the procedure ends. 
D)  The syntax for the call to InputBox is incorrect.

Question 3

When a procedure finishes execution, __________.

Accepted Answer

A)  control returns to the point where the procedure was called and continues with the next statement 
B)  the application terminates unless the procedure contains a Return statement 
C)  control transfers to the next procedure found in the code 
D)  the application waits for the user to trigger the next event 
A)  control returns to the point where the procedure was called and continues with the next statement 
B)  the application terminates unless the procedure contains a Return statement 
C)  control transfers to the next procedure found in the code 
D)  the application waits for the user to trigger the next event

Question 4

Which of the following does not apply to procedures and functions?

Accepted Answer

A)  they help to break up a large body of code into smaller chunks 
B)  they make it easier to maintain and modify code 
C)  the execution time is significantly reduced by calling procedures and functions 
D)  they permit the same sequence of code statements to be called from multiple places 
A)  they help to break up a large body of code into smaller chunks 
B)  they make it easier to maintain and modify code 
C)  the execution time is significantly reduced by calling procedures and functions 
D)  they permit the same sequence of code statements to be called from multiple places

Question 5

When debugging a program in break mode, the Step Into command causes the currently highlighted line of code to execute.

Accepted Answer

A) True 
 B)False

Question 6

Although you can omit the ByVal keyword in a parameter variable declaration, it is still a good idea to use it.

Accepted Answer

A) True 
 B)False

Question 7

Which statement is not true regarding functions?

Accepted Answer

A)  A function is a self-contained set of statements that can receive input values. 
B)  Visual Basic has many built-in functions such as CSng(txtInput.Text) 
C)  A function can only return a single value. 
D)  The same function can return several data types including integer, string, or double 
A)  A function is a self-contained set of statements that can receive input values. 
B)  Visual Basic has many built-in functions such as CSng(txtInput.Text) 
C)  A function can only return a single value. 
D)  The same function can return several data types including integer, string, or double

Question 8

What is incorrect about the following function?
 Function sum(ByVal intX As Integer, ByVal intY As Integer) As Integer
Dim intAns As Integer
IntAns = intX + intY
End Function

Accepted Answer

A)  intAns should not be declared inside the Function. 
B)  the as Integer at the end of the Function heading should be eliminated. 
C)  the function does not return a value 
D)  parameters intA and intB should be declared as ByRef 
A)  intAns should not be declared inside the Function. 
B)  the as Integer at the end of the Function heading should be eliminated. 
C)  the function does not return a value 
D)  parameters intA and intB should be declared as ByRef

Question 9

If we were to call the MakeDouble and ChangeArg methods shown below, using the following statements, what value would be assigned to lblResult.Text?
Dim intValue As Integer = 20
ChangeArg(intValue)
LblResult.Text = MakeDouble(intValue).ToString()

Function MakeDouble (ByVal intArg As Integer) As Integer
Return intArg * 2
End Function

Sub ChangeArg2(ByRef intArg As Integer)
' Display the value of intArg.
LstOutput.Items.Add(" ")
LstOutput.Items.Add("Inside the ChangeArg procedure, " &
"intArg is " & intArg.ToString())
LstOutput.Items.Add("I will change the value of intArg.")
' Assign 0 to intArg.
IntArg = 0
' Display the value of intArg.
LstOutput.Items.Add("intArg is now " & intArg.ToString())
LstOutput.Items.Add(" ")
End Sub

Accepted Answer

A)  0 
B)  20 
C)  40 
D)  (cannot be determined) 
A)  0 
B)  20 
C)  40 
D)  (cannot be determined)

Question 10

What will be the value of dblSum after the button btnAdd is clicked, assuming that 25 is entered by the user into txtNum1, and 35 is entered into txtNum2?
 Private Sub btnAdd_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnAdd.Click

Dim dblNum1, dblNum2, dblSum As Double
DblNum1 = CDbl(txtNum1.Text)
DblNum2 = CDbl(txtNum2.Text)
DblSum = Sum(dblNum1, dblNum2)
LblSum.Text = dblSum.ToString()

End Sub

Function Sum(ByVal dblNum1 As Double, ByVal dblNum2 As Double) as Double
Return dblNum1 + dblNum2
End Function

Accepted Answer

A)  60 
B)  50 
C)  0 
D)  70 
A)  60 
B)  50 
C)  0 
D)  70

Question 11

Which one of the following declarations uses Pascal casing for the procedure name?

Accepted Answer

A)  Sub MyProcedure()
End Sub 
B)  Sub myprocedure()
End Sub 
C)  Sub my_procedure()
End Sub 
D)  Sub myProcedure()
End Sub 
A)  Sub MyProcedure()
End Sub 
B)  Sub myprocedure()
End Sub 
C)  Sub my_procedure()
End Sub 
D)  Sub myProcedure()
End Sub

Which is the correct way to define a function named Square that receives an integer and returns an integer representing the square of the input value?

What is wrong with the following GetName procedure? Sub GetName(ByVal strName As String) StrName = InputBox("Enter your Name:") End Sub

When a procedure finishes execution, __________.

Which of the following does not apply to procedures and functions?

When debugging a program in break mode, the Step Into command causes the currently highlighted line of code to execute.

Although you can omit the ByVal keyword in a parameter variable declaration, it is still a good idea to use it.

Which statement is not true regarding functions?

What is incorrect about the following function? Function sum(ByVal intX As Integer, ByVal intY As Integer) As Integer Dim intAns As Integer IntAns = intX + intY End Function

Which one of the following declarations uses Pascal casing for the procedure name?

Introduction to Programming and Visual Basic

Creating Applications With Visual Basic

Variables and Calculations

Making Decisions

Lists and Loops

Multiple Forms, Modules, and Menus

Arrays and More

Files, Printing, and Structure

Working With Databases

Developing Web Applications

Classes, Collections, and Inheritance

Filters

Exam 6: Procedures and Functions

Which is the correct way to define a function named Square that receives an integer and returns an integer representing the square of the input value?

What is wrong with the following GetName procedure? Sub GetName(ByVal strName As String) StrName = InputBox("Enter your Name:") End Sub

When a procedure finishes execution, __________.

Which of the following does not apply to procedures and functions?

When debugging a program in break mode, the Step Into command causes the currently highlighted line of code to execute.

Although you can omit the ByVal keyword in a parameter variable declaration, it is still a good idea to use it.

Which statement is not true regarding functions?

What is incorrect about the following function? Function sum(ByVal intX As Integer, ByVal intY As Integer) As Integer Dim intAns As Integer IntAns = intX + intY End Function

Which one of the following declarations uses Pascal casing for the procedure name?

Introduction to Programming and Visual Basic

Creating Applications With Visual Basic

Variables and Calculations

Making Decisions

Lists and Loops

Multiple Forms, Modules, and Menus

Arrays and More

Files, Printing, and Structure

Working With Databases

Developing Web Applications

Classes, Collections, and Inheritance

Filters