Lecture Notes on 11 Sep 2009

while (cond):
  # body of the loop

# Example of an infinite loop
while (True):
  # some statement

# Example of a loop that never gets executed
while (False):
  # some statement

# Sum all the numbers from 1 to 100
sum = 0
count = 1
while (count <= 100):
  sum = sum + count
  count = count + 1

print "Sum = ", sum

# Template for Day.py

def main():
  # Prompt the user to enter day
  day = input ("Enter day: ")
  print "Day = ", day

  # Check if the day is in the range 1 through 31
  while ((day < 1) or (day > 31)):
    day = input ("Enter day: ")
    print "Day = ", day
  
  # Prompt the user to enter month
  month = input ("Enter month: ")
  print "Month = ", month

  # Prompt the user to enter year
  year = input ("Enter year: ")
  print "Year = ", year

  # Adjust month to start from March
  # Decrement year for January and February
  if ((month == 1) or (month == 2)):
    month = month + 10
    year = year - 1
  else:
    month = month - 2

main()