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Higher Study | Compiler Design | Lexical Analysis

What is the output of a lexical analyzer?
What is the output after the compiling stage in the sequence of compiling source code into executable code?
Which phase during compilation does a compiler recognize the keywords of a language?
Which of the following data structures is used by a compiler to manage information about variables and their attributes?ib
Which of the following is the first phase of compiler which is also termed as scanning?
Which of the following is a data structure that is used to hold information about source code during compilation process?
The lexical analysis for a modern computer language like Java necessarily needs the power of which one of the following machine models?
Which of the following are applications of symbol table ? (A) Storage allocation (B) Checking type compatability (C) Suppressing duplicate error messages Choose the correct answer from the options given below:
Which of the following machine model can be used in a necessary and sufficient sense for lexical analysis in modern computer language?
A particular BNF definition for a “word” is given by the following rules. <word> ∷ = <letter> | <letter><charpair> | <letter><intpair> <charpair> ∷ = <letter><letter> | <charpair><letter><letter> <intpair>  ∷ = <integer><integer> | <intpair><integer><integer> <letter>  ∷ = a | b | c | ….. |y| z <integer>  ∷ = 0 |1|2| …… | 9 Which of the following lexical entries can be derived from < word > ? l. pick II. picks lll. c44
Which of the following are language processor?
In compiler, which of the following reads input characters to identify tokens?
A lexical analyzer uses the following patterns to recognize three tokens T1, T2, and T3 over the alphabet {a,b,c}. ?1: ?? (?|?)∗? ?2: ?? (?|?)∗? ?3: ?? (?|?)∗? Note that ‘x?’ means 0 or 1 occurrence of the symbol x. Note also that the analyzer outputs the token that matches the longest possible prefix. If the string ???????? is processed by the analyzer, which one of the following is the sequence of tokens it outputs?
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