
6.4 Looping Techniques 303
than 0, then at the end of our loop, our minimum value will still be 0,
which is also incorrect.
6.4.5 Animation
Animation is another operation that can be performed using while loops.
For example, to move an object across a graphics window, we change the x
or y values and draw the object in a new position in each iteration of the
loop. We stop moving the object when we reach the edges of the window.
Therefore, the sentinel value for the loop is that the x- or y-coordinate has
reached the edge of the window.
6.14.1 Multiple Choice Exercises
Question 1
6.14.2 Reading and Understanding Code
Questions 5,6,7,8,20
6.14.3 Fill In the ...