RESERVEDWORD

Reserved word

In a programming language, a reserved word is a word that cannot be used as an identifier, such as a name of a variable or function or a label; this is a syntactic definition, part of the lexical grammar of identifiers, and a reserved word may have no meaning. A closely related and often conflated notion is a keyword which is a word with special meaning, while syntactically these are terminal symbols in the phrase grammar. Keywords primarily fall into a few classes: part of a production rule with nonterminal symbols, such as the word if in most procedural languages, which indicates a conditional and takes clauses, names of primitive ...

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reserved word

Noun

  1. A string of characters that is a verb, command or other part of a programming language and, therefore, cannot be used as the name of a variable, constant, function or procedure.


The above text is a snippet from Wiktionary: reserved word
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