Lecture Notes on 27 Sep 2013

* Test 1 on 2 Oct 2013 - in class and closed book
  No multiple choice questions
  Number conversions
  Write code or interpret code
  Study guide posted

* Assignment 3 due today

* Code Lab Tutorial exercises for Chapter 4 posted
  Due on Monday, 30 Sep 2013

* Assignment 4 posted due on 1 Oct 2013

* Outline of the program to compute the day of the week

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

  # Prompt the user to enter the month
  month = int (input ('Enter month: '))
  print (month)

  # Prompt the user to enter day
  day = int (input ('Enter day: '))
  print (day)

  # Compute parameters a, b, c, and d
  ...

  # Compute day of the week using Zeller's algorithm
  ...
  
  # Write out the result using chained conditionals
  if (r == 0):
    print ('The day is Sunday.')
  elif (r == 1):
    print ('The day is Monday.')
  ...

main()


Boolean Expressions

Assume num is an integer variable and ch is a string of one character.

Write a boolean expression that evaluates to True if num is even.
(num % 2 == 0)

Write a boolean expression that evaluates to True if num is odd.
(num % 2 == 1)
(num % 2 != 0)

Write a boolean expression that evaluates to True if num is a
factor of 12.
(12 % num == 0)

Write a boolean expression that evaluates to True if num is a
multiple of 12.
(num % 12 == 0)

Write a boolean expression that evaluates to True if num is
a two digit number.
(num >= 10) and (num <= 99)

Assume the variable year is a valid year. Write a boolean
expression that evaluates to True if year is a leap year.
(year % 400 == 0) or ((year % 100 != 0) and (year % 4 == 0))

Write a boolean expression that evaluates to True if ch is
a lower case character.
(ch >= 'a') and (ch <= 'z')

Write a boolean expression that evaluates to True if ch is
a letter.
((ch >= 'a') and (ch <= 'z')) or ((ch >= 'A') and (ch <= 'Z'))