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Bnf backus naur form is a syntactic metalanguage i e a language about a language.
Backus naur form beispiel. Using bnf it is possible to. Hierzu zählt die syntax gängiger höherer programmiersprachen. Bnf was originally developed by john backus and subsequent contribution from peter naur to describe the syntax of algol 60 programming.
A backus naur forma ismert még mint bnf vagy backus naur formalizmus backus normálforma bacus naur forma vagy pánini backus forma környezetfüggetlen nyelvtanok leírására használható metaszintaxis. Backus of the us and peter naur of denmark and usually written bnf is the best known example of a meta language q v i e. Bnf is a purely text based notation.
Backus benannt später wurde sie auch nach peter naur benannt. Bnf or backus naur form is an elegant and succinct way of expressing a grammar in very few lines. Expression list expression.
Backus naur form bnf backus naur form named after john w. In computer science backus naur form or backus normal form bnf is a metasyntax notation for context free grammars often used to describe the syntax of languages used in computing such as computer programming languages document formats instruction sets and communication protocols they are applied wherever exact descriptions of languages are needed. Find out more about how this works in today s random wedne.
Line end opt ws eol line end line end. Rule opt ws identifier opt ws opt ws expression opt ws eol. Bnf expanded and streamlined into ebnf extended bacus naur form.
One that syntactically describes a programming language. For instance in official language. Each graphic syntax diagram in this reference is followed by a link to a text description of the graphic.
List term whitespace list. A bnf széles körben használatos a számítógépek programozási nyelveinek nyelvtanának leírására. Die backus naur form oder backus normalform ist eine kompakte formale metasprache zur darstellung kontextfreier grammatiken.
Bnf easier in the writing language. Beide waren pioniere der informatik die sich mit der erstellung der algol 60 regeln und insbesondere mit der kunst. Bnf received after digunakanakan to describe algol in the early 1960s.
The metalanguage is a formal notation for specifying the grammar that describes the syntax of a programming language. Ursprünglich war sie nach john w. Bnf kalu from his pack bambang hari is a formal language developed by backus and peter naur for mendeskrispsikan language grammar.
The standard technique for defining the syntax of a computer language is to use backus naur form bnf. Sie wird auch für die notation von befehlssätzen und kommunikationsprotokollen verwendet. Backus naur form bnf ebnf backus naur form syntax rule syntax.
Identifier character character. The text descriptions consist of a simple variant of backus naur form bnf that includes the following symbols and conventions.
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