Question

is a sequence of characters used to name variables, methods, classes etc​

Answer 1

Explanation:

Identifiers are used to name different parts of a program such as variables, methods, classes, objects, etc. ... An an identifier can be a sequence of alphabets, digits, underscore and dollar sign characters only.

Answer 2

An Identifier is a sequence of characters used to name variables, methods, classes, etc​.

Explanation:

• In programming languages, all the user-defined variables or blocks are given a unique name which is called an Identifier.

• An identifier shouldn't be a keyword. It is defined by the user.

• Almost in all the programming languages, the rule that is fixed to declare an identifier is:

        1. It shouldn't start with a numerical.

        2. It shouldn't be a keyword.

        3. It should start with either an underscore(_) or any English letter.

        4. It can have numbers, digits, and underscore.

        5. Some compilers restricts the identifier length up to 31 characters.

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