FOR boundary filling algorithm

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<dos.h>

void boundaryFill4(int,int,int,int);

void main()

{

int x,y,n,i;

int gd=DETECT,gm;

clrscr();

initgraph(&gd,&gm,"e:\\tc\\bgi");

int fill=5;

int boundary=2;

/*- draw object -*/

line (50,50,200,50);

line (200,50,200,300);

line (200,300,50,300);

line (50,300,50,50);

/*- set seed point -*/

x = 100; y = 100;

boundaryFill4(x,y,fill,boundary);

getch();

}

void boundaryFill4(int x,int y,int fill,int boundary)

{

int current;

current=getpixel(x,y);

if((current!=boundary)&&(current !=fill))

{

setcolor(fill);

putpixel(x,y,fill);

boundaryFill4(x+1,y,fill,boundary);

boundaryFill4(x-1,y,fill,boundary);

boundaryFill4(x,y+1,fill,boundary);

boundaryFill4(x,y-1,fill,boundary);

}

}