%{ 
 
#include<stdio.h> 
 
%} 
 
%% 
 
int | float | char {printf("%s is a Keyword", yytext);} 
 
[0-9]+ {printf("%s is a Number", yytext);} 
 
[a-zA-Z][a-zA-Z|0-9]* {printf("%s is an Identifier", yytext);} 
 
[+ | - | * | /] {printf("%s is a Operator", yytext);} 
 
[@|#|$|&] {printf("%s is a Special Symbol", yytext);} 
 
. | \n {ECHO;} 
 
%% 
 
int main() 
 
{ 
 
printf("Please enter the string..!"); 
 
yylex(); 
 
} 
 
int yywrap()	 
 
{ 
 
return 1; 
 
} 

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