Compiler Design and Construction208010 marksNumerical: regex to DFASpecification and Recognition of tokens
How does a Lexical Analyzer recognize a token? Give an example to make it clear. Convert the regular expression $a(a+b)(b+c)⭒a# to DFA.
How does a Lexical Analyzer recognize a token? Give an example to make it clear. Convert the regular expression $a(a+b)(b+c)⭒a# to DFA.[10]
--- A Lexical Analyzer (scanner) reads the source program character by character from left to right, groups sequences of characters into meaningful units called lexemes, and classifies each lexeme into a token by matching it against predefined patterns (specified using Regular Expressions). Term ...