Which of the following is NOT a typical output of a lexical analyzer?

Practice Questions

Q1
Which of the following is NOT a typical output of a lexical analyzer?
  1. Tokens
  2. Symbol table
  3. Abstract syntax tree
  4. Error messages

Questions & Step-by-Step Solutions

Which of the following is NOT a typical output of a lexical analyzer?
  • Step 1: Understand what a lexical analyzer does. It reads source code and breaks it down into tokens.
  • Step 2: Identify what typical outputs a lexical analyzer produces. These include tokens, token types, and possibly line numbers.
  • Step 3: Recognize that an abstract syntax tree (AST) is a structure that represents the hierarchical syntax of the code.
  • Step 4: Know that the AST is created by the parser, which comes after the lexical analyzer in the compilation process.
  • Step 5: Conclude that since the AST is produced by the parser, it is NOT a typical output of the lexical analyzer.
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