#Chapter 1 question 7
#Modify the chaos program so that it accepts two inputs and prints a table with two columns.
 
def main():
    print("This program illustrates a chaotic function")
    x = eval(input("Enter a number between 0 and 1: "))
    y = eval(input("Enter another number between 0 and 1: "))
    n = eval(input("How many rows should I print?: "))
    for i in range(n):
        x = 3.9 * (x - x * x)
        y = 3.9 * (y - y * y)
        print("{0:10.6f} {0:10.6f}" .format(x, y))
 
 
main()