While loop demo: this program simulates the spin of a roulette wheel and images that a better starts with $5 and makes $1 bets on black which pays "even money" -- the better loses a dollar if the spin comes up green (0, and 00) or red (1, 3, 5, 7, 9, 14, 16, 18, 21, 23, 25, 27, 28, 30, 32, 34, 36) but wins a dollar if the spins comes up black. The simulation continues to spin "while" there is still money to be bet. It counts how many spins are needed in a given instance to lose all of one's original five dollars.