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Lexical Analysis with lex (1) and flex(1)

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lex (1) and flex(1)

lex (1) and flex(1). Lex public interface. FILE * yyin ; /* set before calling yylex () */ int yylex (); /* call once per token */ char yytext []; /* chars matched by yylex () */ int yywrap (); /* end-of-file handler */. .l file format. header %% body %% helper functions.

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