Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Videos > Compiler Design > Examples On How to Find First & Follow in LL(1) - Top Down Parsing
Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture | Compiler Design - Computer Science Engineering (CSE)
FAQs on Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture - Compiler Design - Computer Science Engineering (CSE)
| 1. What is LL(1) parsing in computer science engineering? |  |
Ans. LL(1) parsing is a top-down parsing technique used in computer science engineering to analyze and process the syntax of a programming language. It stands for "Left-to-right, Leftmost derivation with 1 symbol Lookahead." It involves constructing a parse tree from the start symbol and matching the input string against the grammar rules, using a lookahead of one symbol.
| 2. How do you find the FIRST set in LL(1) parsing? | |
Ans. To find the FIRST set in LL(1) parsing, follow these steps:
1. If the symbol is a terminal, add it to the FIRST set.
2. If the symbol is a non-terminal, check its production rules:
- If the non-terminal can derive a terminal, add that terminal to the FIRST set.
- If the non-terminal can derive a non-terminal, add the first set of that non-terminal to the FIRST set.
- Repeat this process until all production rules are covered.
| 3. What is the purpose of finding the FIRST set in LL(1) parsing? | |
Ans. The purpose of finding the FIRST set in LL(1) parsing is to determine the possible terminal symbols that can start a string derived from a non-terminal symbol. It helps in predicting which production rule to choose during parsing, based on the next input symbol. The FIRST set is used to construct the parsing table and ensures that the LL(1) grammar is unambiguous.
| 4. How do you find the FOLLOW set in LL(1) parsing? | |
Ans. To find the FOLLOW set in LL(1) parsing, follow these steps:
1. Initialize the FOLLOW set of the start symbol with the end-of-input marker ($).
2. For each non-terminal symbol, check its production rules:
- If the non-terminal symbol is at the end of a production or followed by a terminal, add that terminal to its FOLLOW set.
- If the non-terminal symbol is followed by a non-terminal, add the FIRST set of that non-terminal to its FOLLOW set.
- If the non-terminal symbol is followed by a non-terminal that can derive epsilon, add the FOLLOW set of the left-hand side non-terminal to its FOLLOW set.
- Repeat this process until no more changes occur in the FOLLOW sets.
| 5. Why is LL(1) parsing preferred in computer science engineering? | |
Ans. LL(1) parsing is preferred in computer science engineering for several reasons:
- LL(1) grammars are easy to understand and implement compared to other parsing techniques.
- LL(1) parsers can parse left-recursive grammars, which are common in programming languages.
- LL(1) parsers are efficient and can be generated automatically from LL(1) grammars.
- LL(1) parsing can handle a wide range of programming languages and is widely used in compiler design and syntax analysis.
- LL(1) parsing can detect syntax errors early and provide meaningful error messages to programmers.
About this Video
4.83/5
Rating
Sep 10, 2025
Last updated
Related Exams
Video Description: Examples On How to Find First & Follow in LL(1) - Top Down Parsing for Computer Science Engineering (CSE) 2025 is part of Compiler Design preparation.
The notes and questions for Examples On How to Find First & Follow in LL(1) - Top Down Parsing have been prepared according to the Computer Science Engineering (CSE) exam syllabus.
Information about Examples On How to Find First & Follow in LL(1) - Top Down Parsing covers all important topics for Computer Science Engineering (CSE) 2025 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Examples On How to Find First & Follow in LL(1) - Top Down Parsing.
Introduction of Examples On How to Find First & Follow in LL(1) - Top Down Parsing in English is available as part of our Compiler Design for Computer Science Engineering (CSE) & Examples On How to Find First & Follow in LL(1) - Top Down Parsing in
Hindi for Compiler Design course. Download more important topics related with notes, lectures and mock test series for
Computer Science Engineering (CSE) Exam by signing up for free.
Description
Video Lecture & Questions for Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture | Compiler Design - Computer Science Engineering (CSE) - Computer Science Engineering (CSE) full syllabus preparation | Free video for Computer Science Engineering (CSE) exam to prepare for Compiler Design.
Information about Examples On How to Find First & Follow in LL(1) - Top Down Parsing
Here you can find the meaning of Examples On How to Find First & Follow in LL(1) - Top Down Parsing defined & explained in the simplest way possible.
Besides explaining types of Examples On How to Find First & Follow in LL(1) - Top Down Parsing theory, EduRev gives you an ample number of questions to practice Examples On How to Find First & Follow in LL(1) - Top Down Parsing tests,
examples and also practice Computer Science Engineering (CSE) tests.
Related Searches
Previous Year Questions with Solutions
,Summary
,past year papers
,Semester Notes
,Extra Questions
,practice quizzes
,Important questions
,shortcuts and tricks
,Free
,Objective type Questions
,Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture | Compiler Design - Computer Science Engineering (CSE)
,Viva Questions
,Exam
,study material
,video lectures
,Sample Paper
,MCQs
,Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture | Compiler Design - Computer Science Engineering (CSE)
,mock tests for examination
,ppt
,Examples On How to Find First & Follow in LL(1) - Top Down Parsing Video Lecture | Compiler Design - Computer Science Engineering (CSE)
;
Study Examples On How to Find First & Follow in LL(1) - Top Down Parsing on the App
Students of Computer Science Engineering (CSE) can study Examples On How to Find First & Follow in LL(1) - Top Down Parsing alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Examples On How to Find First & Follow in LL(1) - Top Down Parsing,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Examples On How to Find First & Follow in LL(1) - Top Down Parsing is prepared as per the latest Computer Science Engineering (CSE) syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup