Hilbert Curve added

HilbertCurve.cpp

@@ -0,0 +1,71 @@
+#include<iostream>
+#include<graphics.h>
+#include<math.h>
+#include<cstdlib>
+#include<stdlib.h>
+using namespace std;
+
+void move(int j, int h, int &x, int &y)
+{
+	if(j == 1)
+	{
+		y = y - h;
+	}
+	else if(j == 2)
+	{
+		x = x + h;
+	}
+	else if(j == 3)
+	{
+		y = y + h;
+	}
+	else if(j == 4)
+	{
+		x = x - h;
+	}
+	setcolor(BROWN);
+	lineto(x,y);
+}
+
+void hilbert(int d, int r, int u, int l, int i, int h, int &x, int &y)
+{
+	if(i > 0)
+	{
+		i--;
+		hilbert(r,d,l,u,i,h,x,y);
+		move(d,h,x,y);
+		hilbert(d,r,u,l,i,h,x,y);
+		move(r,h,x,y);
+		hilbert(d,r,u,l,i,h,x,y);
+		move(u,h,x,y);
+		hilbert(l,u,r,d,i,h,x,y);
+	}
+}
+
+int main()
+{
+	int gd = DETECT,gm;
+	initgraph(&gd,&gm,NULL);
+	int x,y,h,n,u = 1,r = 2,d = 3,l = 4;
+	cout<<"Enter x-co-ordinate of initial point: ";
+	cin>>x;
+	
+	cout<<"Enter y-co-ordinate of initial point: ";
+	cin>>y;
+	
+	cout<<"Enter length of line segment: ";
+	cin>>h;
+	
+	cout<<"Enter order of curve: ";
+	cin>>n;
+	
+	moveto(x,y);
+	//1. d,r,u;
+	//hilbert(d,r,u,l,n,h,x,y);
+	
+	//2. r,d,l;
+	hilbert(r,d,l,u,n,h,x,y);
+	getch();
+	closegraph();
+	return 0;
+}