# File: chaos.py
# Chaos program to print side-by-side values
# Note: This output is UGLY, but uses only things seen in Chapter 1
#       For a more elegant version see c04ex12.py

def main():
    print "This program illustrates a chaotic function"
    x1 = input("Enter the first seed between 0 and 1: ")
    x2 = input("Enter the second seed between 0 and 1: ")
    print
    print "input     ", x1, " | ", x2
    print "-------------------------------------------"
    for i in range(10):
        x1 = 3.9 * x1 * (1 - x1)
        x2 = 3.9 * x2 * (1 - x2)
        print "      ", x1, " | ", x2

main()