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What does the term 'token' refer to in the context of lexical analysis?
What does the term 'token' refer to in the context of lexical analysis?
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What does the term 'token' refer to in the context of lexical analysis?
A sequence of characters
A data structure for syntax trees
A meaningful sequence of characters
A type of error in parsing
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In lexical analysis, a token refers to a meaningful sequence of characters that represents a basic element of the language.
Questions & Step-by-step Solutions
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Q
Q: What does the term 'token' refer to in the context of lexical analysis?
Solution:
In lexical analysis, a token refers to a meaningful sequence of characters that represents a basic element of the language.
Steps: 5
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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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