%{
#include <stdio.h>
%}
 
%%
[ \t\n]+              { printf("white Space\n"); }
 
int|float|return      { printf("Keyword: %s\n", yytext); }
 
[a-zA-Z_][a-zA-Z0-9_]* { printf("Identifier: %s\n", yytext); }
 
[0-9]+(\.[0-9]+)?     { printf("Number: %s\n", yytext); }
 
[+\-*/=]              { printf("Operator: %s\n", yytext); }
 
"("|")"|"{"|"}"|"["|"]"|";"|"," 
                      { printf("Special character: %s\n", yytext); }
 
.                     { printf("Unknown character: %s\n", yytext); }
%%
 
int main(void) {
    yylex();
    return 0;
}
 
int yywrap(void) {
    return 1;
}
 

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