blackjack game

I am attempting to write a c program for a blackjack game for my c programming class. I have the code for the shuffling of the cards. I am required to use six decks of cards. My professor says that it can be written in 1000 lines of code. I was thinking about using a struct for this program. Any ideas?

This may give you some ideas Blackjack(21)
I imagine you will be able to do it with less than 1000 lines of code.