Lecture Notes on 23 Jun 2014

# Outline for the Easter Sunday program

def main():
  # Prompt the user to enter year
  y = int (input ('Enter year: '))
  print (y)

  # Compute Easter Sunday according to Gauss's algorithm
  a = y % 19

  n = 4
  p = 15

  # Write out the date for Easter Sunday
  if (n == 3):
    print ('In', y, 'Easter Sunday is on', p, 'March.')
  if (n == 4):
    print ('In', y, 'Easter Sunday is on', p, 'April.')

main()


* Write a Boolean expression that evaluates to True

- num is an odd number
(num % 2 == 1)

- num is an even number
(num % 2 == 0)

- num is a factor of 12
(12 % num == 0)

- num is a multiple of 12
(num % 12 == 0)

- num is a three digit number that is divisible by 3
(num >= 100) and (num <= 999) and (num % 3 == 0)

- num is not a three digit number and is divisible by 5
(num < 100) or (num > 999) and (num % 5 == 0)

- ch is a lower case letter
(ch >= 'a') and (ch <= 'z')

- ch is a lower case vowel
(ch == 'a') or (ch == 'e') or (ch == 'i') or (ch == 'o') or (ch == 'u')

- ch is either a lower case or upper case letter
((ch >= 'a') and (ch <= 'z')) or ((ch >= 'A') and (ch <= 'Z'))
('a' <= ch <= 'z') or ('A' <= ch <= 'Z')

- y is a leap year
(y % 400 == 0) or ((y % 100 != 0) and (y % 4 == 0))