# L-11 MCS 260 Fri 5 Feb 2010  a for loop
#
# Shows annual growth of an investment.
# The user enters principal, interest rate,
# and the number of years.  After each year
# the balance of the investment are shown.
#
print 'Calculation of the annual balance'
B = input('Give amount to invest : ')
r = input('Give annual interest rate : ')
n = input('Give number of years : ')
print 'At year %d : Balance = $%.2f' % (0,B)
for i in range(1,n+1):
   B *= (1 + r/100)
   print 'At year %d : Balance = $%.2f' % (i,B)