program draw_circle;
uses graph;
Var
graphicsDriver, graphicsMode : integer;
Radius : Integer;
Begin
graphicsDriver := Detect;
InitGraph(graphicsDriver, graphicsMode, '');
setlinestyle(0, 0, 3);
for Radius:=1 to 23 do Circle(320, 240, Radius * 10);
readln;
ClearDevice; {clear screen}
SetColor(LightMagenta); {set paint color}
for Radius:=1 to 23 do Arc(320, 240, 0, 280, Radius * 10);
readln;
closegraph;
end.
