%{
#include <stdio.h>
%}
 
/* Define patterns */
letter      [a-zA-Z]
digit       [0-9]
id          {letter}({letter}|{digit})*
float       {digit}+"."{digit}*
 
%%
 
{id}        { printf("Valid Identifier: %s\n", yytext); }
{float}     { printf("Valid Floating Point Number: %s\n", yytext); }
.           { printf("Invalid Token: %s\n", yytext); }
 
%%
 
int main(void) {
    yylex();  // Start lexical analysis
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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