Re: Solution needed..urgent!!

The following post is probably not appropriate for this group but I
know there are brilliant minds active at this place (trust me, this
puzzle will involve some time and lots of grey matter), so would
appreciate if you guys can jump in with any solutions/suggestions.
Thanks!

You are given a deck containing n cards. While holding the deck:

1. Take the top card off the deck and set it on the table
2. Take the next card off the top and put it on the bottom of the deck
in your hand.
3. Continue steps 1 and 2 until all cards are on the table. This is a
round.
4. Pick up the deck from the table and repeat steps 1-3 until the deck
is in the original order.

Write a program to determine how many rounds it will take to put a
deck back into the original order. This will involve creating a data
structure to represent the
order of the cards. This program should be written in C or C++. Do
not use STL. It should
take a number of cards in the deck as a command line argument and
write the result to stdout.