# File: factorial1.py
#
# Compute the factorial iteratively

def fac(n):

   product = 1
   for i in range(2,n+1):
      product = product * i

   return product


def main():
   print("3! =", fac(3))
   print("5! =", fac(5))
   print("17! =", fac(17))
   print("93! =", fac(93))

main()