C/C++ programs for boundary fill with 4 connect

C/C++ programs for boundary fill with 4 connect 

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<dos.h>

void b_fill(int x,int y,int newc,int boundc)

{

          int g;

          g=getpixel(x,y);

          if((g!=boundc)&&(g!=newc))

          {

                   putpixel(x,y,newc);

                   delay(1);

                   b_fill(x+1,y,newc,boundc);

                   //b_fill(x-1,y,newc,boundc);

                   b_fill(x,y-1,newc,boundc);

                    b_fill(x,y+1,newc,boundc);     

          }

}

void main()

{

          int gd=DETECT,gm;

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

          rectangle(50,50,150,150);

          b_fill(51,51,GREEN,WHITE);

          rectangle(150,150,250,250);

          b_fill(151,151,RED,WHITE);

          rectangle(250,250,350,350);

          b_fill(251,251,BLUE,WHITE);

          getch();

}

OUTPUT: