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What does the term 'token' refer to in the context of lexical analysis?

Practice Questions

Q1
What does the term 'token' refer to in the context of lexical analysis?
  1. A sequence of characters
  2. A data structure for syntax trees
  3. A meaningful sequence of characters
  4. A type of error in parsing

Questions & Step-by-Step Solutions

What does the term 'token' refer to in the context of lexical analysis?
  • Step 1: Understand that lexical analysis is the first phase of compiling a programming language.
  • Step 2: Know that during this phase, the source code is read and processed.
  • Step 3: Recognize that a 'token' is a group of characters that has a specific meaning.
  • Step 4: Identify that tokens can represent keywords, operators, identifiers, or symbols in the code.
  • Step 5: Conclude that tokens are the building blocks that help the compiler understand the structure of the code.
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