DDA_Algo

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

int main()
{
    int gd = DETECT, gm, i;
    int dx, dy, steps, x, y;
    float xinc, yinc;
    int x0, x1, y0, y1;
    initgraph(&gd, &gm, "");
    x0 =10, y0=20, x1=100, y1=110;
    dx = x1-x0;
    dy = y1-y0;
    if(abs(dx)>=abs(dy)){
        steps = abs(dx);
    }
    else{
        steps = abs(dy);
    }
    xinc = dx/steps;
    yinc = dy/steps;
    x=x0;
    y=y0;
    putpixel(x0, y0, 3);
    for (i=0; i<steps; i++){
        x=x+xinc;
        y=y+yinc;
        putpixel(x0, y0, 3);
    }
    closegraph();
    return 0;
}