//MPC
#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
#include<conio.h>
#include<dos.h>
#include<iostream.h>
void main()
{
	int gdriver=DETECT,gmode,errorcode;
	initgraph(&gdriver,&gmode,"c:\\tc\\bgi");
	int xm=getmaxx()/2;
	int ym=getmaxy()/2;
	cout<<"\n Enter radius:";
	int r;
	cin>>r;
	int x=0;
	int y=r;
	float d=1.25-r;
	while(x<=y)
	{
		putpixel(xm+x,ym-y,15);
		putpixel(xm+y,ym-x,15);
		putpixel(xm+y,ym+x,15);
		putpixel(xm+x,ym+y,15);
		putpixel(xm-x,ym+y,15);
		putpixel(xm-y,ym+x,15);
		putpixel(xm-y,ym-x,15);
		putpixel(xm-x,ym-y,15);
		if(d<0)
		{
			d+=(2*x)+3;
		}
		else
		{
			d=d+(2*(x-y))+5;
			y=y-1;
		}
		x=x+1;
	}
	getch();
	closegraph();
}