code for Boundry Fill Algorithm

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

void boundaryfill(int x,int y,int fcolor,int bcolor);
void main()
{ clrscr();
  int gd,gm;
  gd=DETECT;
  gm=0;
  initgraph(&gd,&gm,"Z:\TC\BGI");
  int x,y,bcolor,fcolor;

  cout<<"enter seed point";
  cin>>x>>y;
  cout<<"enter boundary color";
  cin>>bcolor;
  cout<<"enter new color";
  cin>>fcolor;
  setcolor(bcolor);
  rectangle(50,50,100,100);
  boundaryfill(x,y,fcolor,bcolor);
  getch();
  }

void boundaryfill(int x,int y,int fcolor,int bcolor)
{
  if((getpixel(x,y)!=fcolor)&&(getpixel(x,y)!=bcolor))
  { putpixel(x,y,fcolor);
    boundaryfill(x+1 ,y,fcolor,bcolor);
    boundaryfill(x-1,y,fcolor,bcolor);
    boundaryfill(x,y-1,fcolor,bcolor);
    boundaryfill(x,y+1,fcolor,bcolor);
    boundaryfill(x+1,y-1,fcolor,bcolor);
    boundaryfill(x+1,y+1,fcolor,bcolor);
    boundaryfill(x-1,y-1,fcolor,bcolor);
    boundaryfill(x-1,y+1,fcolor,bcolor);
  }
 }