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Only a subset of regular expressions can be translated to a deterministic finite

ID: 3576465 • Letter: O

Question

Only a subset of regular expressions can be translated to a deterministic finite automaton (DFA) that recognizes them. Lexical analysis occupies only a negligible fraction of total runtime in a compiler. There is no possibility of ambiguity in a left-recursive grammar. A program conforming to a context free grammar can be recognized by either a non-deterministic finite automaton (NFA) or a DFA. Types can be and only need to be represented as a tree in a C compiler. Any program that parses correctly should be accepted by a compiler, which should proceed to carry out code generation. An abstract syntax tree is suitable form of data structure for code optimization in a multilingual compiler. Any regular expression can be recognized by a program generated by YACC or BISON. Symbol tables are used in lexical analysis. A basic block is a collection of any instructions convenient for program analysis.

Explanation / Answer

1. True

2.True

3.True

4.Fale

5.False

6. False

7. False

8. true

9. False

10. True