#include<stdio.h>
#include<graphics.h>
#include<math.h>
#include<dos.h>
#include<conio.h>


#define pi    3.1415926
#define angle 2*pi/360
 

void draw_outline(void){
  int x[360];
  int y[360];
  int i=0;
  int j=0;
  for(i=0;i<360;i++){
   x[i]=320+50*cos(i*angle);
   y[i]=230+50*sin(i*angle);
  }
   setcolor(YELLOW);
   circle(320,230,100);
   ellipse(x[359],y[359],0,180,50,50);
   ellipse(x[359-180],y[359-180],180,360,50,50);
   for(i=358;i>=0;i--){
   j=i-180;
   setcolor(YELLOW);
   circle(320,230,100);
   ellipse(x[i],y[i],0-i,180-i,50,50);
   ellipse(x[j],y[j],180-i,360-i,50,50);
   setcolor(WHITE);
   circle(x[i],y[i],10);
   setcolor(YELLOW);
   circle(x[j],y[j],10);

   setcolor(BLACK);
   ellipse(x[i+1],y[i+1],0-i-1,180-i-1,50,50);
   ellipse(x[j+1],y[j+1],180-i-1,360-i-1,50,50);
   circle(x[i+1],y[i+1],10);
   circle(x[j+1],y[j+1],10);
   delay(3000);
   if(j==0){
   setcolor(BLACK);
   ellipse(x[i],y[i],0-i,180-i,50,50);
   ellipse(x[j],y[j],180-i,360-i,50,50);
   circle(x[j],y[j],10);
   circle(x[i],y[i],10);
   i=358;

   }
  }
}

int main(void){
int gmode=VGA;
int gdriver=VGAHI;
initgraph(&gmode,&gdriver,"");
draw_outline();

getch();
closegraph();
return 0;
}