%option noyywrap
%{
	#include<stdio.h>
%}
digit [0-9]
letter [A-Za-z_]
key "int" | "main"| "for" | "return" | "printf"|"while"|"scanf"|"if"|"else"
 
%%
{key} {printf("%s is a keyword and length is: %d\n",yytext,yylength);}
{letter} ({letter}|{digit})*{printf("%s is identifier and length is: %d\n",yytext,yylength);}
{digit}+ {printf("% s is a int number and int value is %d\n, yytext,atoi(yytext));}
{digit}+"."{digit}+ {printf("%s is a floting pint number and floting value is %f\n,yytext,atof(yytext));}
%%
int main()
{
yylex();
 
	return 0;
}