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
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