Lexical Analysis in Compiler Design

Front

Identify the corresponding tokens for the statement: int intvalue = 100;

Back

int (keyword), intvalue (identifier), = (operator), 100 (constant or literal) and ; (symbol)

Front

What happens if the lexical analyzer encounters an invalid token?

Back

It generates an error

Front

The Longest Match Rule states that the token scanned should be determined based on the longest match among all the tokens available. True or False?

Back

True

Front

Which of the following is a type of lexical token?

Back

Keyword

Front

Why is lexical analysis important in the compilation process?

Back

It helps in breaking down the source code into manageable pieces for further analysis

Front

What is typically used to indicate a comment in source code?

Back

Comment

Front

What is a "token" in lexical analysis?

Back

A sequence of characters in the source code that forms a valid, meaningful symbol defined by the grammar of the programming language such as identifiers, literals, keywords, operators, and punctuation

Front

Which of the following statements is true about tokens in lexical analysis?

Back

Identifiers, keywords, constants (literals), strings, numbers, punctuations and operators can all be tokens

Front

How does a lexical analyzer treat whitespace in the source code?

Back

It removes it from consideration

Front

Why is it important for a lexical analyzer to remove whitespace from consideration?

Back

To ensure that only meaningful tokens are processed