Logical AND Operator

What Does Logical AND Operator Mean?

The logical AND operator is an operator that performs a logical conjunction on two statements. It only yields a value of “true” when both statements are true. If one of the two statements is false, then the logical AND operator yields a “false” value.

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Programming languages use logical AND operators to ascertain conditions that result from predefined criteria. The logical AND operator has different representations in different programming languages, including the ampersand (&) used in Java and C++, and the keyword AND used in Visual Basic.

Techopedia Explains Logical AND Operator

Logical AND operators are often used in conditional and loop statements. Short-circuit versions of the logical AND operator exist in many programming languages, like the (&&) operator in C++ and Java and the keyword “AndAlso” in Visual Basic.

Short-circuiting does not evaluate the right-hand operand if the result of the left-hand operand is false, as the overall result should be false. Short-circuiting might improve performance; however, if the right-hand statement performs additional actions, such as an assignment operation, short-circuiting skips those actions.

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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…