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

void boundaryFill(int x, int y, int fillColor, int boundColor) {
	 int currentColor = getpixel(x,y);
	 if((currentColor != fillColor) && (currentColor != boundColor)) {
        putpixel(x, y, fillColor);
		// delay(1); // <3
        boundaryFill(x+1, y, fillColor, boundColor);
		boundaryFill(x-1, y, fillColor, boundColor);
		boundaryFill(x, y+1, fillColor, boundColor);
		boundaryFill(x, y-1, fillColor, boundColor);
	 }
}

void floodFill(int x, int y, int fillColor, int oldColor) {
	 int currentColor = getpixel(x,y);
	 if((currentColor == oldColor)) {
		putpixel(x, y, fillColor);
		// delay(1); // <3
        floodFill(x+1, y, fillColor, oldColor);
		floodFill(x-1, y, fillColor, oldColor);
		floodFill(x, y+1, fillColor, oldColor);
		floodFill(x, y-1, fillColor, oldColor);
	 }
}
void main() {
	int gd = DETECT, gm;
	initgraph(&gd, &gm, "C:\\TC\\BGI");
	setcolor(WHITE);
	circle(200, 200, 40);
	boundaryFill(200, 200, RED, WHITE);
	setcolor(YELLOW);
	line(400, 400, 450, 300);
	setcolor(GREEN);
	line(450, 300, 500, 400);
	setcolor(RED);
	line(400, 400, 500, 400);
	floodFill(450, 375, BLUE, BLACK);
	getch();
	closegraph();
}