Xor Operator

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This page is specific to the Visual Basic for Applications (VBA) Language Reference for Office 2010.

Used to perform a logical exclusion on two expressions.

Syntax

[result =] expression1 Xor expression2

The Xor operator syntax has these parts:

Part

Description

result

Optional; any numeric variable.

expression1

Required; any expression.

expression2

Required; any expression.

Remarks

If one, and only one, of the expressions evaluates to True, result is True. However, if either expression is Null, result is also Null. When neither expression is Null, result is determined according to the following table:

If expression1 is

And expression2 is

Then result is

True

True

False

True

False

True

False

True

True

False

False

False

The Xor operator performs as both a logical and bitwise operator. A bit-wise comparison of two expressions using exclusive-or logic to form the result, as shown in the following table:

If bit in expression1 is

And bit in expression2 is

Then result is

0

0

0

0

1

1

1

0

1

1

1

0

Example

This example uses the Xor operator to perform logical exclusion on two expressions.

Dim A, B, C, D, MyCheck
A = 10: B = 8: C = 6: D = Null    ' Initialize variables.
MyCheck = A > B Xor B > C    ' Returns False.
MyCheck = B > A Xor B > C    ' Returns True.
MyCheck = B > A Xor C > B    ' Returns False.
MyCheck = B > D Xor A > B    ' Returns Null.
MyCheck = A Xor B    ' Returns 2 (bitwise comparison).