# File: chaos_comments.py
# A simple program illustrating chaotic behavior with comments

# Defining a new function/method called "main"
# programs are often placed in the function called "main"

def main():
   print("This program illustrates a chaotic function")
   x = eval(input("Enter a number between 0 and 1:"))
   for i in range(10): # for loop with 10 iterations i=0,...,9
      x = 3.9 * x * (1-x)
      print(x)


# invoke the defined main function
main()