/*
File: woof3.l
In this version, most of the printing is done in main().
The global variable yylval holds the string to be printed.
*/

%option noyywrap

%{
#include <stdio.h>
#include <stdlib.h>

typedef char* YYSTYPE ;

YYSTYPE yylval ;

%}

%%

<<EOF>>    { sprintf(yylval, "\nWoof! are we done talking?\n"); return 0; }
treat      { sprintf(yylval, "\n!!!%s!!! Woof! yummy!\n", yytext); return 1;}
walk       { sprintf(yylval, "\n!!!%s!!! Woof! where's the leash?\n", yytext); return 1; }
dinner     { sprintf(yylval, "\n!!!%s!!! Woof! I'm hungry!\n", yytext); return 1; }
good\ dog  { sprintf(yylval, "\n!!!%s!!! Woof! talking about me!\n", yytext); return 1;}
\n         { printf("\n"); }
.          { printf("."); }

%%

int main(int argc, char **argv) {

   yylval = (char *) malloc(10000) ; // hope that's enough
  
   while ( yylex() ) {
      printf("%s", yylval) ;
      printf("== pat, pat, nice doggy == \n") ;
   }
  
   printf("%s", yylval) ;
   free(yylval) ;
   return 0 ;
}