import getopt
import os
import sys
import threading

#fibonacci sequence element n, the slow way
def fibonacci(n):
    if n <= 1:
        return 1
    else:
        return fibonacci(n - 1) + fibonacci(n - 2)

def print_fibonacci(max_n):
    for i in range(max_n):
        print fibonacci(i)

def run_child():
    os.system('python2.2 fibonacci.py -c > fibonacci.txt')

def am_child():
    opts, args = getopt.getopt(sys.argv[1:], 'c')
    return not not opts

if not am_child():
    threading.Thread(target = run_child).start()

print_fibonacci(100)