%option noyywrap
%{
#include <stdlib.h>
#include <string.h>
%}

DIGIT    [0-9]
NUM      {DIGIT}+(\.{DIGIT}+)?

LETTER   [a-zA-Z]
ID       {LETTER}({LETTER}|{DIGIT})*


%%

[ ]     { /* skip blanks */ }

[iI][fF] {return IF;}
{NUM}    {yylval.value = atof(yytext);
          return NUM;}
{ID}     {yylval.lexeme = strdup(yytext);
          return ID;}

"+"     {return '+';}
"-"     {return '-';}
"*"     {return '*';}
"/"     {return '/';}
";"     {return ';';}
.       { }
  


%%