Answer:

The program would start out interacting with the user something like:

Center X (0-639)
? 200
Center Y (0-479)
? 350
Radius (0-200)
? 14
Color (1-15)
? 2

At this point the SCREEN 12 statement would start graphics and the ordinary screen would be replaced by the graphics screen. The green circle will then appear on the graphics screen.

End of the Chapter

That is the end of this chapter. You may wish to review the following. Click on a subject that interests you to go to where it was discussed.

The SCREEN statement.
Pixels and the PSET statement.
X any Y location of a pixel.
Details about screen 12
The COLOR statement.
Pen color.
The LINE statement.
Writing over pixels.
Jagged lines in computer graphics.
The CIRCLE statement.
Arithmetic with graphics statements.
Variables with graphics statements.
The INPUT statement with graphics statements.