Lecture Notes on 12 Oct 2009

# This program prompts the user to enter the starting hour and the
# duration of the event and it will show when the event will end
def main():
    hr = input ("Enter starting hour: ")
    evt = input ("Enter duration of event in hours: ")

    time = (hr - 1 + evt) % 12 + 1

    print "At the end of the event, the hour hand will show = ", time

main()

# This program prompts the user to enter the string and a shift
# It then prints the encrypted the string
def encrypt (st, shift):
  newSt = ""
  for ch in st:
     if (ch.islower()):
       newCh =  chr((ord(ch) - ord('a') + shift) % 26 + ord('a'))
     else:
       newCh = ch
     newSt = newSt + newCh

  return newSt

def main():

  st = raw_input ("Enter a string: ")
  st = st.strip()

  shift = input ("Enter shift: ")

  print encrypt (st, shift)

main()