#include"graphics.h"
#include"dos.h"
#include"conio.h"
#include "stdlib.h"

int main()
{
int gd=DETECT,gm,x=20,y=20,a=20,b=20,dx=1,dy=1;
int size,i;
void *buf;
initgraph(&gd,&gm,"");
setcolor(4);
    randomize();
    for(i=0;i<2000;i++)
    putpixel(random(640),random(480),random(15));
      
do
{ /*cleardevice() ;*/
    setfillstyle(6,4);
    fillellipse(x,y,a,b);
  
         size=imagesize(x,y,a,b);
    buf=malloc(size);
    getimage(x,y,a,b,buf);
     x+=dx;y+=dy;
     if(x==630||x==10) dx*=-1;
     if(y==472||y==8) dy*=-1;
  
   putimage(x,y,buf,COPY_PUT);
  
  delay(500);
} while(!kbhit());
  closegraph();
  return 0;
}