z.lex calculator lexer

%{
#include "y.tab.h"
%}
%option noyywrap noinput nounput batch
%%
[ \t\n]
print return PRT;
dimension return DIM;
[][+=*/%();-] return yytext[0];
"//" return QUO;
A { yylval.ival = 0; return ID; }
B { yylval.ival = 1; return ID; }
C { yylval.ival = 2; return ID; }
D { yylval.ival = 3; return ID; }
WW { yylval.ival = 0; return ID2; }
XX { yylval.ival = 1; return ID2; }
YY { yylval.ival = 2; return ID2; }
ZZ { yylval.ival = 3; return ID2; }
[0-9]+ { yylval.dval = atof(yytext); return NUM; }
%%