Wednesday, February 25, 2009

Logical Operators

Logical Operators
These are also known as Boolean operators.Boolean operators are used in the conditions where condition can be true or false case.
Basically logical operators are used to form logical expressions that represent true or false conditions.
For Example:
The 'Or' operator returns the result when only one operands is true.
The given table summarizes various logical operators and their description:
Operators Description of Symbol
Not Return the negative of two expressions.
And Returns true only when both conditions are true.
Or Returns true when only one condition is true.
Imp Returns false only when 1st operand is true and 2nd is false.
Eqv Returns true only when both conditions are true.
Xor Return true only if both operands are of opposite sign.

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