Bresenham's line drawing algorithm ( for m <= 1 )

gistfile1.cpp

// Bresenham's line drawing algorithm ( for m <= 1 )
#include <iostream>
using namespace std;

int drawBH(int x1,int y1,int x2,int y2)
{
  int x = x1, y = y1;
	int dx = x2-x1;
	int dy = y2-y1;
	int e = 2*dy - dx;
	
	for(x; x <= x2; x++)
	{
		cout <<"x = "<<x<<", y = "<<y<<"\n";
		if (e < 0)
		{
			e += 2*dy;
		}	
		else
		{
			y += 1;
			e += 2*dy - 2*dx;
		}
	}
	return 0;
}

int main()
{
	drawBH(0,0,6,2);
	return 0;
}