Compiler Design Concepts Quiz

What is the purpose of adding an extra rule as rule 0 in LR construction?

• To simplify the grammar

• To define the start symbol

• To eliminate left recursion

• To reduce the number of states

How do you compute state 0 for the LR table?

• By finding the first terminal in the grammar

• By computing the epsilon closure of the initial item of the first rule of the new grammar

• By listing all possible transitions

• By removing left recursion

Which of the following is NOT a step in drawing the transitions for state 0 in the LR table?

• Moving the dot one symbol to the right

• Using terminal and nonterminal symbols

• Adding new states for each transition

• Removing epsilon transitions

In Chapter 5, which structure is used to represent arithmetic expressions?

• Binary Search Tree

• Abstract Syntax Tree (AST)

• Linked List

• Hash Table

What is the purpose of a Directed Acyclic Graph (DAG) in the context of arithmetic expressions?

• To detect cycles in expressions

• To optimize expressions by eliminating common subexpressions

• To convert expressions to postfix notation

• To evaluate expressions directly

Which data structure is NOT typically used to store a symbol table?

• Hash Table

• Binary Search Tree

• Queue

• Linked List

What is the time complexity for lookup operations in a hash table used as a symbol table?

Which of the following is a key concept in regular expressions?

• Derivation

• Epsilon closure

• Backtracking

• Concatenation

What is the first step in converting a regular expression to a DFA?

• Constructing a parse tree

• Drawing an NFA

• Removing left recursion

• Simplifying the regular expression

In the context of parsing, what is a predictive table used for?

• To generate 3 AC code

• To parse a string without backtracking

• To optimize arithmetic expressions

• To convert NFA to DFA