CS 111 - 2/7/17

Exam 1:

    Thursday, 2/16/17, during lecture
    20 Multiple Choice Questions
    2 Write Code Questions

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Algorithm Composition:
  (steps to create some code)

  Create a function to draw a rectangle which
     can have its length and width specified

   1.  Determine what parameters are needed
          one parameter to specify the turtle 
          one parameter to specify the height of the rect
          one parameter to specify the width of the rect

   2.  What (if any) return value is given
          No return value

   3. Steps needed to perform the desired outcome
       Attempt 1:  draw four sides

       
         Refinement 1:
              draw side using the height parameter
              turn by 90 degrees
              draw side using the width parameter
              turn by 90 degrees
              draw side using the height parameter
              turn by 90 degrees
              draw side using the width parameter
              turn by 90 degrees


         Refinement 2:
              repeat the following twice in a loop:
                  draw side using the height parameter
                  turn by 90 degrees
                  draw side using the width parameter
                  turn by 90 degrees

         Write in code:

def drawRect( turtle, hgt, wid ) :
    count = 1

    while ( count <= 2 ) :
       forward (turtle , hgt)
       turn ( turtle, 90 )
       forward (turtle , wid )
       turn ( turtle, 90 )
       count = count + 1