%{

 #include<stdio.h>

  

%}

 

 

%%

\/\/(.*) {};     

\/\*(.*\n)*.*\*\/ {};   

%%

 

int yywrap(){return 1;}

 

int main()

{

 yyin=fopen("hello.c","r");

 yyout=fopen("new.c","w");

 yylex();

 return 0;

}