9. Lex program to view file contents with double line spacing

It reads every line and prints it. It gives a line gap between every line.

for example

I am going
She is going

appears

I am going

She is going

%{
   
%}
%%
\n {printf("\n\n",yytext);}
%%

main()
{
extern FILE *yyin;
yyin=fopen("new","r");
yylex();
}