Mid-Point Circle Algorithm Example in C Language

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

void main()
{

 int gd=DETECT,gm;
 int x,y,r;
 void Drawcircle(int,int,int);
 printf("Enter the Mid points and Radious:");
 scanf("%d%d%d",&x,&y,&r);
 initgraph(&gd,&gm,"");
 Drawcircle(x,y,r);
 getch();
 closegraph();

}

void Drawcircle(int x1,int y1,int r)
{

 int x=0,y=r,p=1-r;
 void cliplot(int,int,int,int);
 cliplot(x1,y1,x,y);
 while(x<y)
 {
 x++;
 if(p<0)
  p+=2*x+1;
  else
  {
   y--;
   p+=2*(x-y)+1;
  }
  cliplot(x1,y1,x,y);
 }

}