%{
#include <stdio.h>
%}
digit ([0-9])
letter ([a-zA-Z])
id {letter}({letter}|{digit})*
num ([0-9]+)
keywords (if|else|while|and|or|print|elif|char|float)
punctuation (["(" | ")" | "{" , "}" | ";" | ","])
operators ([+*/-=^])
 
%%
{id} {printf("<ID, %s>\n", yytext);}
{keywords} {printf("<Keywords, %s>\n", yytext);}
{punctuation} {printf("<Punctuators, %s>\n", yytext);}
{operators} {printf("Operators, %s>\n", yytext);}
%%
int main()
{
yylex();
return 0;
}
int yywrap()
{
return 1;
}

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