LEXICAL ANALYSIS
ROLE OF THE LEXICAL ANALYZER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Source Code
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Object Code
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Lexeme
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Parse Tree
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Detailed explanation-1: -Explanation: Lexical analyser’s Input is Source Code. Explanation: Lexical Analysis Identifies Different Lexical Units in a source Code.
Detailed explanation-2: -Lexical analysis is the first phase of a compiler. It takes modified source code from language preprocessors that are written in the form of sentences. The lexical analyzer breaks these syntaxes into a series of tokens, by removing any whitespace or comments in the source code.
Detailed explanation-3: -The lexical analyzer is the part of the compiler that detects the token of the program and sends it to the syntax analyzer. Token is the smallest entity of the code, it is either a keyword, identifier, constant, string literal, symbol. Examples of different types of tokens in C.
Detailed explanation-4: -State true or false: Statement: A lexical analyzer reads the source code line by line. Explanation: A lexical analyzer reads the source code letter by letter and when it encounters a space or an operator or any special character, it decides that the word is completed.