Chapter 6 Review (ISCS 272) – Flashcards

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

A ________ is a special variable that receives a value being passed into a procedure or function.

Which of the following code examples is a function that will accept three Integer parameters, calculate their average, and return the result?

All of the following are true about functions except ________.

By writing your own procedures, you can ________ an applications code, that is, break it into small, manageable procedures.

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

Which statement is true in regard to passing an argument by value to a procedure?

A procedure may not be accessed by procedures from another class or form if the ________ access specifier is used.

What is assigned to lblDisplay.Text when the following code executes? Dim intNumber As Integer = 4 AddOne(intNumber, 6) lblDisplay.Text = intNumber ' Code for AddOne Public Sub AddOne(ByVal intFirst As Integer, ByVal intSecond As Integer) intFirst += 1 intSecond += 1 End Sub

When a procedure finishes execution, ________.

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 the syntax error in the following procedure? Sub DisplayValue(Dim intNumber As Integer) MessageBox.Show(intNumber.ToString()) End Sub

Which of the following procedures will keep track of the number of times it was called?

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

Which of the following functions accepts a parameter named dblSales and returns the commission to the calling statement? Assume that the commission should equal the sales multiplied by the commission rate. Use the following table as a guide to the calculation of the commission rate.Commission Rate Sales Commission Rate less than 2,000 10% 2,000 or more 15%

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

When a parameter is declared using the ________ qualifier, the procedure has access to the original argument variable and may make changes to its value.

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 of the following examples correctly uses an input box to assign a value to an integer, and returns the integer to the calling program using a reference parameter?

Which of the following calls to the GetNumber procedure is not valid? Sub GetNumber(ByVal intNumber as Integer) ' (procedure body) End Sub

Which of the following can be returned by a function?

Which debugging command executes a function call without stepping through function's statements?

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

Choose a new, more descriptive name for the WhatIsIt function based on the result of the code below. Function WhatIsIt(ByVal intRepeat as Integer) as Integer Dim intResult as Integer = 1 Dim intCount as Integer For intCount = 1 to intRepeat intResult = intResult * 2 Next intCount Return intResult End Function

When calling a procedure, passed arguments and declared parameters must agree in all of the following ways except ________.

What is the value of intTotal after the following code executes? Dim intNumber1 As Integer = 2 Dim intNumber2 As Integer = 3 Dim intTotal As Integer intTotal = AddSquares(intNumber1, intNumber2) Function AddSquares(ByVal intA As Integer, ByVal intB As Integer) As Integer intA = intA * intA intB = intB * intB Return intA + intB intA = 0 intB = 0 End Function

If you do not provide an access specifier for a procedure, it will be designated ________ by default.