Who can create code of << n!! >>?

Question

code

Answer 1

you are welcome c: of course that was a simple way of coding for this task

Answer 2

What does n!! means? Do you want a code to calculate (n!)! factorial two times?

Answer 3

n!!=2!*4!*6!.......

Answer 4

thank you very much

Answer 5

if you still looking for
https://code.sololearn.com/c2BtG7qd0zQp/?ref=app