bash cat multiple files

Question

I am trying to cat three files and obtain and insert a newline \n after each file ,I thought of using something like :

cat f1 f2 f3|tr "\EOF" "\n"

without success.

What is the easiest way to achieve that ?

Answer 1

cat f1 <(echo) f2 <(echo) f3 <(echo) 

or

perl -pe 'eof&&s/$/\n/' a b c