Here is the simple program which will make the circle and going to animate it, you can add your own methods in it, for getting more and more circles or may be the line in your output.
int gd=DETECT, gm;
initgraph(&gd,&gm,"c:/your own path"); // for example "turboc3/bgi
cleardevice(); // it will clear the values stored previously
circle(223,32,i); // this will increase the radius of the circle
delay(23); // since the execution takes place rapidly we decrease the speed of it
closegraph(); // this will terminate or close the internalized graph
This is very simple program hopping this will useful for you.