Lex Example: A C Comment Recognizer

The following is a lex program that will recognize a multi-line comment in C:

---Program Starts Here---

%option noyywrap

sc        "/*"
ec        "*/"
string    \"[^"]*\"
inside    [^*]|"*"[^/]|{string}
comment    {sc}{inside}*{ec}

%%

{comment}    {    printf("<<<%s>>>", yytext);    }
.            {    printf("%s", yytext);    }

%%

int main ()
{
 yylex();
 return 0;
}

---Program Ends Here---

Note: Check your google group. I uploaded the flex and bison binary files.