Answer:

If the circle moves or changes size, or is added or deleted as the program runs, then it should be a software object.

Start on the Circle Class

If the circles are expected to move as the program executes, then each one should be an object. For example, if the circles represent playing pieces in a game each one should be an object so that it can be moved or removed from play.

class Circle
{
  // variables



  // constructors


  // methods


}

So our Circle will be a drawing tool. The circles drawn in the picture will merely be the traces left behind each time the tool is used. A start on the class is at the left.

Let us think about the variables that a Circle needs.

QUESTION 3:

At a minimum, what variables are needed for a circle?