Test 6 Review

Using the statement below, what is the initial value of this variable? Dim intHours As Integer

0

If you assign a number such as 3.768 to a double variable, what will be stored in the memory location?

3.768

If you assign a number, such as 3.7, to an integer variable, what will be stored in the memory location?

4

What value does the statement intWeight=Convert.toInt32(txtWeight.Text) return if the value keyed by the user was 47?

47

A variable named blnIsTrue is of what data type?

Boolean

A variable named decBonus is of what data type?

Decimal

Which would BEST represent a variable that will hold a true or false value if an entry was valid?

Dim blnlsValid As Boolean

If a student needed to declare a variable to hold values representing a grade point average (GPA), which would be the BEST declaration given programming naming conventions?

Dim dblGPA As Double

A variable named dblTaxRate is of what data type?

Double

Which data type is appropriate to store the value 75.9?

Double

Which data type is used to declare a variable that will store the value 0.113?

Double

Josie is writing a program and needs a variable that can be accessed from multiple event procedures. What scope of variable should she use?

Global

A variable named intGrade is of what data type?

Integer

Which data type is appropriate to store the number five (5)?

Integer

Why is label NOT a valid variable name?

It is a Visual Basic reserved keyword.

In the statement, lblMessage.Text = "This is a label." What does lblMessage refer to?

Label control

Hugh declares a variable in the event procedure code for a button. What scope is this variable?

Local

What is the correct code to create a message box from the following code? lblcost.Text = "The cost of the product is: " & (deccost + dectax)

MessageBox.Show ("The cost of the product is: "& (deccost + dectax))

Variable names:

Must begin with a letter

Susan declares a variable within an If statement. What is the scope of this variable?

Procedural

How do you declare a variable whose value cannot be changed after assignment?

Replace Dim with Const

John needs a variable to hold its value beyond its normal lifetime. What type of variable should he use?

Static

Kirk wants to delcare a variable that holds its value beyond the normal lifetime. How should he declare it?

Static intGrade As Integer

A variable named strName is of what data type?

String

Jayce wants to store the student name "Ellen" in a variable. Which data type should he use?

String

The most appropriate data type for the word "Value" is:

String

The words "A Double data type should be always stored as a Double data type!" would be best stored in which one of the following data types?

String

What data type is returned from a text box control?

String

A Boolean variable can contain:

True and false.

Which is a proper name for a button according to Hungarian notation?

btnAdd

Which would BEST represent a Button control object that will be used to calculate an average?

btnCalcAverage

Which method formats output as currency?

dblMoney.ToString("$##.00")

Which is written in Hungarian Notation?

decAmountDue

According to Hungarian notation, which is a correct variable name?

decHourlyRate

What is an appropriate naming convention for a constant according to Hungarian notation?

decRATE

Which would be appropriate as a variable?

strFirstName

Which would be appropriate as an object name?

txtHoursWorked

According to Hungarian notation, what is an appropriate name for a text box?

txtName

What is an appropriate name for a textbox according to Hungarian notation?

txtName