In a regular expression,repetition is indicated by ____.
A) an exclamation mark
B) a vertical bar
C) a hyphen
D) an asterisk
Correct Answer:
Verified
Q19: Ordinary syntax is sometimes called concrete syntax
Q20: A left-recursive rule for an operation causes
Q21: Recursive-descent parsers turn the nonterminals into a
Q22: Shift-reduce parsers shift tokens onto a stack
Q23: _ are symbols used to distinguish between
Q25: A language is considered to be _
Q26: Grammar rules are also called _.
A) productions
B)
Q27: _ are phrase structures that are broken
Q28: Which of the following is not considered
Q29: _ languages require all tokens to occur
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