Deck 7: Sub and Function Procedures

Question 1

An event procedure is a Function procedure that is associated with a specific object and event.

Answer 1

False

Question 2

The ____ keyword in a function header identifies the data type of the data being returned.

A) Is
B) DataType
C) As
D) Return

Answer 2

C

Question 3

A Function procedure does not return a value after performing its assigned task.

Answer 3

False

Question 4

You can determine whether a variable is being passed by value or by reference by looking at the Call statement.

Question 5

The number of arguments listed in the Call statement's argumentList should agree with the number of parameters listed in the parameterList in the procedure header.

Question 6

The names of the arguments in a Call statement need to be identical to the names of the corresponding parameters.

Question 7

The computer automatically processes an event procedure when the event occurs.

Question 8

When you pass a variable ____,the computer passes only the contents of the variable to the receiving procedure.

A) by reference
B) by parameter
C) by dataType
D) by value

Question 9

It is a common practice to begin a procedure's name with a(n)____.

A) noun
B) verb
C) adjective
D) adverb

Question 10

You pass a variable ____ when the receiving procedure needs to know the variable's contents,but the receiving procedure does not need to change the contents.

A) by reference
B) by parameter
C) by dataType
D) by value

Question 11

Like a Sub procedure header,a Function procedure header includes the As dataType section.

Question 12

The syntax of the Call statement is ____.

A) Call procedureName([argumentList])
B) Call procedureName{[parameterList]}
C) Call procedureName([argumentList],dataType)
D) Call procedureName([argumentList])As dataType

Question 13

Visual Basic allows you to specify that an argument in the Call statement is optional.

Question 14

A(n)____ is processed only when it is called (invoked)from code.

A) dependent Sub procedure
B) independent Sub procedure
C) event procedure
D) independent event procedure

Question 15

An independent Sub procedure is a procedure that is independent of any object and event.

Question 16

Math.Round(3.234,2)returns the number 3.24.

Question 17

Usually,the statement that invokes a function will assign the function's return value to a(n)____.

A) address
B) argument
C) variable
D) parameter

Question 18

When using ____,you capitalize the first letter in the procedure name and the first letter of each subsequent word in the name.

A) sentence case
B) camel case
C) object case
D) Pascal case

Question 19

In most cases,the last statement within a function is the ____ expression.

A) End Function
B) Return
C) As
D) Private

Question 20

An independent Sub procedure can contain one or more ____ in its procedure header that have procedure scope and store an item of data.

A) events
B) variables
C) constraints
D) parameters

Question 21

Like the first item in a list box,the first item in a combo box has an index of ____.

A) 0
B) 1
C) 2
D) 3

Question 22

The expression Math.Round(287.876,2)yields a value of ____.

A) 287.87
B) 287.88
C) 288.00
D) 290.00

Question 23

To sort the items in the list portion of a combo box,you use the combo box's ____ property.

A) Sorted
B) Ascending
C) Descending
D) TabIndex

Question 24

In a ____ combo box,the text portion is not editable.

A) Text
B) Simple
C) DropDown
D) DropDownList

Question 25

The syntax ____ displays a return value.

Question 26

A combo box's ____ property contains the value that appears in the text portion of the control.

A) Add
B) Sorted
C) Text
D) list

Question 27

The syntax ____ assigns a return value to a variable.

Question 28

Which of the following statements will determine the number of items in the list portion of the Department combo box?

Question 29

If the digits argument is omitted,the Math.Round function returns a(n)____.

A) zero
B) exception
C) error
D) integer

Question 30

____ styles of combo boxes are available in Visual Basic.

A) Two
B) Three
C) Four
D) Five

Question 31

A ____ is similar to a list box in that it allows the user to select from a list of choices.

A) text box
B) message box
C) combo box
D) dialog box

Question 32

Which of the following is a valid Return statement?

A) dblNumber Return
B) Return dblNumber ByRef
C) Return ByRef dblNumber
D) Return dblNumber

Question 33

Which of the following is a valid header for a procedure that is passed the number 9.75?

Question 34

Which of the following is a valid header for a procedure that receives the address of a string variable and the address of an integer?

Question 35

As you do with list boxes,you use the Items collection's ____ method to add an item to a combo box.

A) Insert
B) Add
C) New
D) Append

Question 36

An application calculates an ending inventory amount based on a beginning inventory amount,sales,and returns.You need to create a function to calculate the ending inventory using three passed Integer variables: intBegin,intSales,and intReturns.Which of the following procedure headers should be used?

Question 37

For the access key to work correctly in a combo box,you must set the label's TabIndex property to a value that is ____ the combo box's TabIndex value.

A) identical to
B) one less than
C) one more than
D) greater than or equal to

Question 38

The default combo box style in Visual Basic is ____.

A) Text
B) Simple
C) DropDown
D) DropDownList

Question 39

Which of the following statements would invoke the GetEndInventory function and assign the function's return value to the intEnd variable?

Question 40

A form's ____ procedure is responsible for verifying that the user wants to close the application,and then taking the appropriate action based on the user's response.

A) Click event
B) FormClosing event
C) Add event
D) Button event

Question 41

Write the code for a Sub procedure named InitializeVariables.The Sub procedure will assign the number 0 to the intTotalCars,intTotalTrucks,intTotalSUVs.Then write the code to call the procedure.

Question 42

What is the Math.Round function? Provide the function's syntax and define the arguments.

Question 43

Explain the difference between passing data by value and passing data by reference.

Question 44

Write the code for a Sub procedure named DisplayAuto,which displays a message containing the two values passed to it: an automobile make and model.Use strMake and strModel as the parameters.Display the "You own a make model." message in a message box.Then write the statement to invoke the procedure,passing it the contents of the strBrand and strType variables,respectively.

Question 45

How do the parameterList of a procedure header and the argumentList of a Call statement relate to each other?

Question 46

When will the TextChanged event occur for a combo box? Which style allows the user to edit the text of the combo box?

Question 47

An application allows a user to scan a bar code of an item to determine the item price.A message that contains the item name and the item price should display.You need to create a Sub procedure to display the message.Which of the following procedure headers should be used?

Question 48

Write the code for a Sub procedure named CalculateAverage that receives four decimal variables (the first three by value and the last one by reference).The procedure should use the first three variables to calculate the average and then store the result in the fourth variable.

Question 49

Write the code for a function named GetMajor.The function should prompt the user to enter a major field of study and then return the user's response.Then write a statement to invoke the GetMajor function,returning the result to the strCurrentMajor variable.

Question 50

Write the code for a function named CalculateBonus.The function receives two decimal variables representing the salary and bonus rate.The function should calculate the bonus amount by multiplying the salary by the bonus rate,and then return the result.Then write the appropriate statement to invoke the function,passing it the decSalary and decRate variables.Assign the function's return value to the decBonus variable.

Question 51

Which of the following statements would invoke the DisplayMessage Sub procedure?

Question 52

Write the code for a Sub procedure named CalculateBonus.The procedure receives three decimal variables representing the salary,bonus rate,and bonus amount.The procedure should calculate the bonus amount by multiplying the salary by the bonus rate.Create your own variable names.

Question 53

Write the code to add Freshman,Sophomore,Junior,and Senior to the Class combo box.Use the SelectedItem property to make Freshman the default item.

Question 54

An application uses a message box to ask users whether they want to exit the application,and the return value is stored in the dlgButton variable.Write the statement needed to stop the computer from closing the form if the user selects the No button in the message box.

Question 55

An application needs to calculate sales tax for purchases.You decide to simplify the code by putting the sales tax calculation in a function.The returned value from the function is then added to the Subtotal,and the result is stored in the decTotal variable.Which of the following statements will call the GetSalesTax function and return a value to be used in the Total calculation?

Question 56

What is the difference between a Sub procedure and a Function procedure?