Question

Define Variables, Tokens, identifiers, keywords, constants, ​

Answer 1

• A variable is a symbolic name for (or reference to) information.

• A token is the smallest unit in a program. A keyword is reserved words by language.

• An identifier is an unique name given to an entity, which distinctly identifies an entity in a program at the time of its execution.

• Keywords are predefined word that gets reserved for working progs that have special meaning and cannot get used anywhere else.

• A constant is a value that cannot be altered by the program during normal execution, i.e.

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