%{
#include <stdio.h>
%}
 
%%
 
int|char|float|bool|cin|cout|main     { 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("Symbol: %s\n", yytext); }
\n                                     { /* Ignore newlines */ }
[ \t]+                                 { /* Ignore spaces and tabs */ }
 
.                                      { printf("Invalid Token: %s\n", yytext); }
 
%%
 
int main() {
    printf("Enter input: ");
    yylex();
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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