VARIABLESKING OF ALL PROGRAMMING

CONCEPTS

Variables are . . . .

IMPORTANT

What are Variables?

A variable is a named value that changes its contents while the program runs.

You can think of a variable like a

bucket. A bucket those contents can

changeaVariable

Variable Names

ChampagneBucket

Variables have unique names that

make sense

What can they Hold?

ChampagneBucket

Variables can hold anything!

Example of Common Use For Variables in Programs

ChampagneBucket

NameCountAge

Programmers make use of Variables when they know something is going to change

Example of Common Use For Variables in Programs

ChampagneBucket

I’m holding the answer

to that!ITS DAVE!

Name

What’s the name of the

current user?

Data types

ChampagneBucket

Variables have a data typeI’m the type of

Variable that holds only

Champagne ! Don’t you try

and put Lemonade in

me!

Data Types

ChampagneBucket

String IntegerDouble

Float Char

Boolean

Reusable

The point of variables is that

they can be changed and

reused throughout the program

Declaring Variables in VB

Dim name As String

There are 3 parts to declaring a variable

Declaring Variables in VB

Dim name As String

Dim is written below declaring

all variables

All variables should be

declared as a data type

All variable’s have a name

Declaring Variables in VB

Dim name As Stringname = “dave”

Associating something to the variable

The = symbols links name to Dave

Using Variables in Programs Module Module1  Sub Main()  Dim name As String name = "Dave"  Console.WriteLine("hello" & name)  Console.ReadLine()   End Sub End Module