Visual Basic Variables

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Visual Basic Variables

• Molloy College
• Dr. Cohen

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Dimension

• Dim stands for dimension. A variable that
  follows Dim has been assigned

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Dimension

• Dim stands for dimension. A variable that
  follows Dim has been assigned space in memory.

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Example

• Dim dblRadius As Double
• A Double usually contains a

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Example

• Dim dblRadius As Double
• A Double usually contains a decimal.

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Assignment

• Through assignment a variable is given

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Assignment

• Through assignment a variable is given
• value.

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Assignment

• Which statement assigns a value?
• A. 12.3 dblRadius
• B. dblRadius 12.3

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Assignment

• Which statement assigns a value?
• B. dblRadius 12.3
• Dont be fooled!

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Declare Variables

• Where do you declare variables?
• In the middle
• At the beginning
• At the end
• Avoid declaring variables

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Declare Variables

• Where do you declare variables?
• At the beginning

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Example

• Private Sub cmdCalc_Click ( )
• Dim intSum
• Dim dblPrice
• Dim intQuantity
• intSum dblPrice intQuantity
• End Sub

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Doubles

• Must a Double be a decimal?
• Yes or No

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Doubles

• Must a Double be a decimal?
• No