In a concrete parse tree, which nodes are terminal symbols (tokens)?
Understand the Problem
The question asks about the characteristics of nodes in a concrete parse tree, specifically which type of symbols they represent.
Answer
Leaf nodes
In a concrete parse tree, the terminal symbols (tokens) are represented by the leaf nodes.
Answer for screen readers
In a concrete parse tree, the terminal symbols (tokens) are represented by the leaf nodes.
More Information
Parse trees are crucial for understanding the structure of code during compilation. The tokens at the leaf nodes are the actual symbols found in the source code.
Tips
A common mistake is thinking non-terminals are at the leaves. Remember, non-terminals are parent nodes that expand into terminals.
Sources
- Abstract Syntax Tree vs Parse Tree - GeeksforGeeks - geeksforgeeks.org
- Parse Tree in Compiler Design - GeeksforGeeks - geeksforgeeks.org
- Parse tree - Wikipedia - en.wikipedia.org
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