COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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MAY BE
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Cant say
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Detailed explanation-1: -Explanation: Parsers are expected to parse the whole code even if some errors exist in the program. Explanation: The grammar clearly indicates which type of structure does a program has.
Detailed explanation-2: -Parsers are used when there is a need to represent input data from source code abstractly as a data structure so that it can be checked for the correct syntax. Coding languages and other technologies use parsing of some type for this purpose.
Detailed explanation-3: -Explanation: Parsing or syntactic analysis is the process of analysing a string of symbols and conforming to the rules of grammar.
Detailed explanation-4: -A compiler reads the whole source code at once, creates tokens, checks semantics, generates intermediate code, executes the whole program and may involve many passes.
Detailed explanation-5: -Parser is a compiler that is used to break the data into smaller elements coming from lexical analysis phase. A parser takes input in the form of sequence of tokens and produces output in the form of parse tree. Parsing is of two types: top down parsing and bottom up parsing.