CIS: Chp 6

3 things a procedure or function do?

They help to break up a large body of code into smaller chunks 2. They make it easier to maintain and modify code 3. They permit the same sequence of code statements to be called from multiple places

A function can only return a single value (T/F)

True

A function is a self-contained set of statements that can receive input values (T/F)

True

A function must contain at least one Return statement. (T/F)

True

When declaring a procedure, the default accessibility specifier is Public. (T/F)

True

You can use a function to call in an expression. (T/F)

True

a function's signature contains what?

a name, a list of parameters, and return type

a value passed to a procedure

argument

exist only as long as the block executes

block scope

variables declared inside blocks and can be used only inside that block

block scope

the original argument can be changed

by reference

temporary copy of the original argument

by value

statement that invokes a Sub procedure

calling statement

variables declared globally but outside any procedure and can be used by an procedure on form

class scope

last as long as the form is loaded

class scope variables (for a form)

A procedure ___________ return a value; a function ____________ return a value

does not; does

refers to how long (or when) the variable exists during processing; works in conjunction

duration

a type of procedure automatically executed when event occurs

event handler

examples of procedures

event handlers

a collection of statements that performs a task and then returns a value to the part of the program that executed it

function

triggered by statements in other procedures, not by events

general purpose procedures

what can you pass as arguments?

literals variables and any other expressions as long as the data types match the formal parameter declarations

procedure scope & can only be used inside that procedure

local variables and formal parameters

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

loop counter variables

declared in the FOR statement exist throughout all repititions of the loop, and then disappear

loop counter variables

can be either a procedure or function

method

a special variable that receives a value being passed into a procedure

parameter

capitalize 1st character of name and each word

pascal case

a collection of statements that performs a task

procedure

usually exist only as long as the procedure executes

procedure scope

a variable's ______ is its visibility

scope

continue to debug by single-stepping through a procedure

the Step Into

end single-stepping in procedure, continue single-step after the call

the Step Out command

run procedure without single-stepping, continue single-step after the calling

the Step Over command

When calling a procedure, passed arguments and declared parameters must agree in what ways

the number of arguments and the number of parameters must be the same 2. the order of arguments and parameters must correspond 3.the types of the arguments and parameters must correspond

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

variable

What can be determined by a function?

Boolean values, string values, and integer values

To allow an argument to be changed by the receiving procedure, pass the argument:

ByRef

examples of functions

CInt and IsNumeric

A function can return one more values. (T/F)

False

An event procedure is a Function procedure that is associated with a specific object and event. (t/f)

False

Dim is valid when declaring parameters. (T/F)

False

Functions will always return numeric values since strings and boolean values cannot be returned. (T/F)

False

The same function can return several data types including integer, string, or double (T/F)

False

Passing an argument by value means that:

Only a copy of the argument is passed to the procedure

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

Parameters

enables selection of all text within the control

SelectAll() Method