lengyijun/a.l

Created October 24, 2017 15:25

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flex get start!!

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a.l

	%{
	#include<stdio.h>
	#include<ctype.h>
	#ifndef FALSE
	#define FALSE
	#endif
	#ifndef TRUE
	#define TRUE
	#endif
	%}
	%%
	[A-Z] {putchar(tolower(yytext[0]));}
	%%
	void main(void){yylex();}

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lengyijun commented Oct 24, 2017

flex a.l
gcc lex.yy.c -lfl
cat a.log | ./a.out

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