identifier.l

来自「lex files for given decription used as 」· L 代码 · 共 11 行

%{
#include <stdio.h>
%}

%%
[0-9]+[_]*[a-zA-Z]*           printf("It is not an identifier\n",yytext);
[_]*[a-zA-Z]*[_]*[a-zA-Z0-9]*    printf("It is a identifier\n",yytext);

%%