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HeyElliott (talk | contribs) Changing short description from "Expression in a computer program that produces either "true" or "false" when evaluated" to "Expression in a computer program" |
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{{Short description|Expression in a computer program}}
In [[computer science]], a '''Boolean expression''' (also known as '''logical expression''') is an [[Expression (programming)|expression]] used in [[programming language]]s that produces a [[Boolean value]] when evaluated. A Boolean value is either '''true''' or '''false'''. A Boolean expression may be composed of a combination of the Boolean constants '''
| last1 = Gries | first1 = David | author1-link = David Gries
| last2 = Schneider | first2 = Fred B. | author2-link = Fred B. Schneider
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| year = 1993}}.</ref>
Boolean expressions correspond to [[propositional formula]]s in logic and are
| last = van Melkebeek | first = Dieter
| isbn = 9783540414926
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*The expression {{code|3 > 5}} is evaluated as {{samp|false}}.
*{{code|1=5>=3}} and {{code|1=3<=5}} are equivalent Boolean expressions, both of which are evaluated as {{samp|true}}.
*Of course, most Boolean expressions will contain at least one variable ({{code|X > 3}}), and often more ({{code|X > Y}}).
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