BoundaryFill Algo

#include
#include
#include
void main()
{
int gd,gm;
/*initialize graphics mode*/
detectgraph(&gd,&gm);
initgraph(&gd,&gm,"c:\\tc\\bgi");
rectangle(50,50,100,100);
flood(55,55,1,15);
getch();
closegraph();
}

flood(seed_x,seed_y,foreground_col,background_col)
{
if(getpixel(seed_x,seed_y)!=background_col&&getpixel(seed_x,seed_y)!=foreground_col)
{
putpixel(seed_x,seed_y,foreground_col);
flood(seed_x+1,seed_y,foreground_col,background_col);
flood(seed_x-1,seed_y,foreground_col,background_col);
flood(seed_x,seed_y+1,foreground_col,background_col);
flood(seed_x-1,seed_y-1,foreground_col,background_col);
flood(seed_x+1,seed_y+1,foreground_col,background_col);
flood(seed_x-1,seed_y-1,foreground_col,background_col);
flood(seed_x+1,seed_y-1,foreground_col,background_col);
flood(seed_x-1,seed_y+1,foreground_col,background_col);
}
}