In the context of LL parsing, what does the '1' in LL(1) signify?

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Question: In the context of LL parsing, what does the \'1\' in LL(1) signify?

Options:

Correct Answer: One lookahead token is used.

Solution:

The \'1\' in LL(1) indicates that one lookahead token is used to make parsing decisions.

In the context of LL parsing, what does the '1' in LL(1) signify?

In the context of LL parsing, what does the '1' in LL(1) signify?

Step 1: Understand that LL parsing is a method used to analyze the structure of programming languages.
Step 2: The 'L' in LL stands for 'Left-to-right' scanning of the input.
Step 3: The second 'L' stands for 'Leftmost derivation', which means it builds the parse tree from the left side.
Step 4: The '(1)' indicates how many tokens the parser looks ahead to make decisions.
Step 5: In LL(1), the parser looks at 1 token ahead in the input to decide what to do next.

LL Parsing – LL parsing is a top-down parsing technique that uses a lookahead to make decisions about which production rule to apply.
Lookahead Token – A lookahead token is a token that is examined to help determine the next step in the parsing process.