/*    
      count white spaces
      [coded by Arul John] <http://wolf.rules.it>
*/

%{
#include <stdio.h>
int length = 0;
%}

%option noyywrap

IDENTIFIER          [azAZ][azAZ]*

%%

\n                 length++;
"*"                 printf("star\n");
"+"                 printf("plus\n");
IDENTIFIER          printf("string length is %i", yyleng);

%%

main() {
  yylex();
  printf("number of white spaces is %i\n", length);
}