Added DDA

DDA.C

@@ -0,0 +1,43 @@
+#include<stdio.h>
+#include<graphics.h>
+#include<conio.h>
+#include<math.h>
+
+int abs (int n)
+{
+	return ( (n>0) ? n : ( n * (-1)));
+}
+
+void DDA(int X0, int Y0, int X1, int Y1)
+{
+	int i;
+	int dx = X1 - X0;
+	int dy = Y1 - Y0;
+
+	int steps = abs(dx) > abs(dy) ? abs(dx) : abs(dy);
+
+	float Xinc = dx / (float) steps;
+	float Yinc = dy / (float) steps;
+
+	float X = X0;
+	float Y = Y0;
+	for (i = 0; i <= steps; i++)
+	{
+		int tempx=round(X);
+		int tempy=round(Y);
+		putpixel (tempx,tempy,BLUE);
+		X += Xinc;
+		Y += Yinc;
+		delay(100);
+
+	}
+}
+
+int main()
+{
+	int gd = DETECT, gm;
+	initgraph (&gd, &gm, "C:\\Turboc3\\BGI");
+     //	int X1=2, Y1=1, X2=12, Y2=6;
+	DDA(2,1,12,6);
+	return 0;
+}