COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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yy.lex.c
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lex.yy.c
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executable code
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object code
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Detailed explanation-1: -The lex command stores the yylex function in a file named lex. yy. c. You can use the yylex function alone to recognize simple one-word input, or you can use it with other C language programs to perform more difficult input analysis functions.
Detailed explanation-2: -It is a tool or software which automatically generates a lexical analyzer (finite Automata). It takes as its input a LEX source program and produces lexical Analyzer as its output.
Detailed explanation-3: -yylex() returns a value indicating the type of token that has been obtained. If the token has an actual value, this value (or some representation of the value, for example, a pointer to a string containing the value) is returned in an external variable named yylval.