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Using Variables

Using Variables . Declaring Variables . Dim <variable name> As <data type> Variable Name (identifier) Begin with a letter Only letters, digits, and the underscore _ Fewer than 255 characters. Data Types. Examples. Dim intA As Integer Dim dblTaxRate As Double Dim TaxAmount As Currency

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Using Variables

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  1. Using Variables

  2. Declaring Variables Dim <variable name> As <data type> Variable Name (identifier) • Begin with a letter • Only letters, digits, and the underscore _ • Fewer than 255 characters

  3. Data Types

  4. Examples • Dim intA As Integer • Dim dblTaxRate As Double • Dim TaxAmount As Currency • Dim MyName As String

  5. Constants • 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

  6. Getting Input from the User • Text box • Radio Buttons • Check Boxes Example:

  7. Integer Arithmetic: \ • the “\” returns the integer part of division • 7 \ 2 return 3 • 12 \ 5 returns 2 • 35 \ 7 returns 5 • 35 \ 6 returns 5

  8. Integer Arithmetic: Div • 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

  9. Using Option (Radio) Buttons • Use when you want to force the user to make EXACTLY one choice Example

  10. The End

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