#include<iostream.h>
#include<conio.h>
#include<graphics.h>
void main()
{
int gd=DETECT,gmode,i;
initgraph(&gd,&gmode,"f:\\tc\\bgi");
void draw(int i);
setfillstyle(11,10);
cleardevice();
while(1){
do
{
for(i=0;i<500;i++)
{draw(i);
}

}while(!kbhit());
	}
}//main end

void draw(int i)
{
fillellipse(i,i,10,10);//top leftcorner
fillellipse(getmaxx()-i,getmaxy()-i,10,10);//bottom right corner


fillellipse(getmaxx()-i,i,10,10);//top right corner
fillellipse(i,getmaxy()-i,10,10);//bottom left corner

fillellipse(i,getmaxy()/2,20,20);//left center
fillellipse(getmaxx()-i,getmaxy()/2,20,20);//right center

fillellipse(getmaxx()/2,i,20,20);//top center
fillellipse(getmaxx()/2,getmaxy()-i,20,20);//bottom center
cleardevice();

}