Write A Regular Expression For An Identifier.

1.	Write A Regular Expression For An Identifier.
Answer» An identifier is defined as a letter followed by ZERO or more letters or digits. The REGULAR expression for an identifier is given as letter (letter \| DIGIT)* An identifier is defined as a letter followed by zero or more letters or digits. The regular expression for an identifier is given as letter (letter \| digit)*

Answer»

An identifier is defined as a letter followed by ZERO or more letters or digits.
The REGULAR expression for an identifier is given as
letter (letter | DIGIT)*

An identifier is defined as a letter followed by zero or more letters or digits.
The regular expression for an identifier is given as
letter (letter | digit)*

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Write A Regular Expression For An Identifier.

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