Imp Operator

See Also              Example

Used to perform a logical implication on two expressions.

Syntax

result = expr1 Imp expr2

Remarks

The following table illustrates how result is determined:

If expr1         And expr2       The result
is                  is                     is

True              True                True

True              False               False

True              Null1DDW7C0                 Null

False             True                True

False             False               True

False             Null                 True

Null               True                True

Null               False               Null

Null               Null                 Null

The Imp operator performs a bit-wise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result according to the following truth table:

If bit in          And bit in         The result
expr1 is         expr2 is            is

0                   0                      1

0                   1                      1

1                   0                      0

1                   1                      1

See Also

Arithmetic Operators

Comparison Operators

Concatenation Operators

Logical Operators

Operator Precedence

Other Operators

Imp Operator Example

The example displays a message that depends on the value of variables A, B, and C, assuming that no variable is a Null.  If A = 10, B = 8, and C = 6, both expressions evaluate True.  Because both are True, the Imp expression is also True.  To try this example, paste the code into the Declarations section of a form.  Then press F5 and click the form.

Sub Form_Click ()

Dim A, B, C, Msg                      ' Declare variables.

A = 10: B = 8: C = 6                  ' Assign values.

If A > B Imp B > C Then

Msg = "The left expression implies the right expression."

Else

Msg = "The left expression doesn't imply the right expression."

End If

MsgBox Msg                            ' Display results.

End Sub