CIS Chapter 6

lblNewPrice.Text=GetNewPrice(dblCurrentPrice).ToString("C2")

The syntax _____ displays a return value. dblNewPrice = GetNewPrice(dblCurrentPrice) Dim dblNewPrice lblNewPrice.Text=GetNewPrice(dblCurrentPrice).ToString("C2") dblTotalDue = intQuantity*GetNewPrice(dblCurrentPrice)

dblNewPrice = GetNewPrice(dblCurrentPrice)

The syntax __________ assigns a return value to a variable. - lblNewPrice.Text = GetNewPrice(dblCurrentPrice.ToString - dblNewPrice = dblCurrentPrice - Dim dblNewPrice - dblNewPrice = GetNewPrice(dblCurrentPrice)

true

The types of the arguments must be in the same order as the types of the parameters

class scope

Variables declared globally but outside any procedure & can be used by any procedure on form

block scope

Variables declared inside blocks & can be used only inside that block

the function does not return a value

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 - The as Integer at the end of the Function heading should be eliminated - Parameters intA and intB should be declared as ByRef - intAns should not be declared inside the Function - The function does not return a value

strName will be modified, but all changes will be lost when the procedure ends

What is wrong with the following GetName procedure? Sub GetName (ByVal strName as String) strName = InputBox("Enter your Name:") End Sub - The syntax for the call to InputBox is incorrect - strName will be modified, but all changes will be lost when the procedure ends - GetName is a reserved word and cannot be used as a name of a procedure - The procedure is missing a Return statement

ByRef

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

Function Square (ByVal intNum as Integer) as Integer Return intNum * intNum End Function

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? - Function Square (ByVal intNum as Integer) as Integer Return intNum * intNum End Function - Function Square (ByVal intNum as Integer) as Double Return intNum * intNum End Function - Function Square (ByVal intNum as Integer) Return intNum * intNum End Function - Function Square (ByVal intNum as Integer) as Double Dim dblAns as Double dblAns = intNum * intNum Return dbl Ans End Function

all of the above

Which of the following can be returned by a function? Integer values Boolean values String values All of the above

return dblNumber

Which of the following is a valid Return statement? - dblNumber Return - Return dblNumber ByRef - Return ByRef dblNumber - Return dblNumber

false

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

general format of a procedure declaration

[AccessSpecifier] Sub ProcedureName [(ParameterList]) (Statements) End Sub

procedure

a collection of statements that perform a task

function

a collection of statements that perform a task and then returns a value to the part of the program that exectued it

frame

a data structure that holds the values of all the local variables and formal parameters of a procedure

call stack

a last-in, first-out data structure that keeps track of calls to functions

argument

a value passed to a procedure

modularize an application's code, break it down into small managebale procdures, can reduce the amount of duplicated code

advantages of writing your own procedures

true

are event handlers examples of procedures

true

can declare multiple variables of the same name as long as they do not have the same scope

false, can only return one

can function procedures return more than one value?

loop counter variables

can only be used within the loop for which they are declared

true

cannot declare variables of the same name within the same block structure

ProcedureNameIsThis

example of pascal casing

step over

if you want to execute the line, but not single step through the function, what command should you use

step out

if you want to execute the remaining lines of the function and return to the line that called the function what command do you use

step into

if you want to single step through the procedure that is being called what command should you use

ParameterList

list of variables/values passed to the sub procedure

public

may also be accessed by procedures in other forms

true

mouse click is a type of procedure?

by value

only a copy of the argument is passed to the procedure

by reference

procedure has access to the original argument and can make changes to it

private

procedure may be accessed only by other procedures declared in the same class or form

local variables and formal parameters

procedure scope can only be used inside that procedure

locals window

shows all the local data (local variables and formal parameters) of the selected Procedure on the stack

parameter

special variable that receives a value being passed into a procedure

calling statement

statement that invokes a sub procedure

true

(t/f) Items are pushed onto the top of the stack and popped off the top of the stack

name, list of parameters, and return type

A function's signature consists of a...

true

sub procedure have no return type

modularity

take big task and break it into subtasks.

only as long as the procedure is executing

the formal parameters and local variables of a procedure exist

by value and by reference

two ways to pass arguments

method

used to mean both procedures and functions

ProcedureName

used to refer to the procedure

how to declare a function

AccessSpecifier] Function FunctionName ([ParameterList]) As DataType [Statements] Return value End Function

decTotal = decSubtotal + GetSalesTax(decSubtotal)

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 vale to be used in the Total calculation? decTotal = decSubtotal + GetSalesTax(decSubtotal) decTotal = decSubtotal + GetSalesTax() decTotal = decSubtotal + GetSalesTax(decSubtotal As Decimal) decSubtotal + GetSalesTax(decSubtotal)

false

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

parameters

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

true

ByVal is optional and if omitted it is set as the default

as

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