Tiny Flex lexer that skips C-style block comments

comments.lex

%option noyywrap
%x C_COMMENT

%%

"/*"            { BEGIN(C_COMMENT); }
<C_COMMENT>"*/" { BEGIN(INITIAL); }
<C_COMMENT>.    { }
<C_COMMENT>\n   { }

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

%%

int main() {
    yylex();
}