%option noyywrap
%option nounput
 
%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
unsigned int cnt = 0;
%}
 
 
INT      [0-9]+
FLOAT    ([0-9]*\.[0-9]+)|([0-9]+\.[0-9]*)
SSTR     \'[^\'\n]+\'
DSTR     \"[^\"\n]+\"
VAR      [A-Za-z_][A-Za-z0-9_]*
 
%%
 
{FLOAT}  { printf("%s FLOAT\n", yytext); }
{INT}    { printf("%s INTEGER\n", yytext); }
{SSTR}   { printf("%s STRING\n", yytext); }
{DSTR}   { printf("%s STRING\n", yytext); }
{VAR}    { printf("%s VARIABLE\n", yytext); }
 
/* whitespace */
[ \t]+   { /* ignore */ }
 
/* catch-all: consume one char to avoid infinite loops */
.|\n     { /* ignore invalid char/line */ }
 
%%
 
int main(void) {
    yylex();
    return 0;
}
 
/* 
//3.in 2.in
//  SP      [ \t]*
//  ^{SP}{FLOAT}{SP}\n?
*/
 

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MTIzCjBhYWEKNC41CiZxdW90O2hlbGxvIHdvcmxkJnF1b3Q7Ci4KYQomcXVvdDsmcXVvdDsmcXVvdDs=

123
0aaa
4.5
"hello world"
.
a
"""