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Using Variables

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Using Variables

Dim <variable name> As <data type>

Variable Name (identifier)

- Begin with a letter
- Only letters, digits, and the underscore _
- Fewer than 255 characters

- Dim intA As Integer
- Dim dblTaxRate As Double
- Dim TaxAmount As Currency
- Dim MyName As String

- Make program easier to read
dblArea = dblRadius * dblRadius * 3.14

dblArea = dblRadius * dblRadius * dblPi

- Make program easier to modify
dblTotal = dblPurchase * .06

dblTotal = dblPurchase * dblTaxrage

- Text box
- Radio Buttons
- Check Boxes
Example:

- the “\” returns the integer part of division
- 7 \ 2 return 3
- 12 \ 5 returns 2
- 35 \ 7 returns 5
- 35 \ 6 returns 5

- The Mod operator returns the remainder of division.
- 7 Mod 2 returns 1
- 12 Mod 5 returns 2
- 35 Mod 7 returns 0
- 35 Mod 6 returns 5

- Use when you want to force the user to make EXACTLY one choice
Example