Unit #3-02

Learning Outcome

At the end of this lesson, you will be able to:

• understand and use an if statement

Review

• sequential programming

Lesson

• go over  Boolean Expressions , Computer Based Problem Solving

• go over  If…Then , Computer Based Problem Solving

• watch this video

  • the video presenter has BAD programming habits

  • "=" this is not an "equal" sign it is an "assignment statement"

  • "==" is an "equal" operation

• now if __name__ == "__main__" should makes more sense:

  • https://stackoverflow.com/questions/419163/what-does-if-name-main-do

Activity

• step through the "Too Many Students" program (see below)

  • notice it will only seem to do anything if the number is over 30, we will fix this later

Daily Assignment

• create the "Number Guessing Game" program

  • save the number in a constant

    • hint: my number is "5"

  • ask the user to enter a number (between 0 and 9)

    • tell them when they get it right, if they did

    • tell them when they get it wrong, if they did

      • you will need 2 separate if statement to be able to do this

  • unsure you use 2 if statements (one for right a second for wrong)

    • if you know about if ... Else, DO NOT USE IT, yet!

Extra

• recreate the same above program in another language