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Write Your First Visual Basic Program

Lesson 2
Tutorials - Page 1 - Page 2 - Page 3 - Page 4 - Page 5 - Page 6 - Page 7 - Page 8 - Page 9 - Page 10 - Page 11 - Page 12 - Page 13

Learning about Variables
Using Variables is one of the most basic and important subjects
in programming, so this lesson is very important.

Variables are destined to save data.
You can save in variable Text or number.
For example, you can have one variable that holds the Text "Hello and Goodbye",
and have another variable that holds the number 623882

You can think about variables as a cabinet's drawers.
Every drawer has a sticker on it with its unique name.
You can put in each one of the drawers one number or one text String.
During your program, you can open the drawer with the sticker "TheUserName"
and get the text string that found inside the drawer.
You can also delete the text string that found inside the drawer
and put instead of it other text string.

Right now, we are going learn about 2 variable types.
The first type called Integer.
Integer variable can store an Integer number (round number without any fraction)
between -32,768 to 32,767.

You can store in Integer variable the number 0 or the number 375 or
the number -46, but you can't store the number 4.5 (Because of the .5)
or the number 100,000 (Because It's bigger than 32767) or the
number -50,042 (Because it's smaller than -32,768)

The second type called String.
You can store in String variable any text that you want.
For example "Hello" or "abcDDefGhIjk123456 blah blah %$#@!???        Blah!"

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