%{
#include <stdio.h>
#include <stdlib.h>
%}
 
%option noyywrap
 
%%
 
[ \t\n\r]+                  { /* Ignore whitespace */ }
"int"|"float"|"return"       { printf("Keyword: %s\n", yytext); }
[0-9]+                      { printf("Number: %s\n", yytext); }
[a-zA-Z_][a-zA-Z0-9_]*      { printf("Identifier: %s\n", yytext); }
"+"|"-"|"*"|"/"             { printf("Operator: %s\n", yytext); }
 
.                           { printf("Unknown: %s\n", yytext); }
 
%%
 
int main() {
    yylex();  // This runs the lexical analyzer
    return 0;
}
 

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