Write a programme of Breshman Line Algorithm in C?

 Breshman Line Algoritham

#include<stdio.h>

#include<graphics.h>

#include<conio.h>

void drawline(int x0, int y0, int x1, int y1)

{

    int dx, dy, p, x, y;

    dx=x1-x0;

    dy=y1-y0;

    x=x0;

    y=y0;

   p=2*dy-dx;

    while(x<x1)

    {

        if(p>=0)

        {

            putpixel(x,y,7);

            y=y+1;

            p=p+2*dy-2*dx;

        }

        else

        {

            putpixel(x,y,7);

            p=p+2*dy;

        }

        x=x+1;

    }

}

 int main()

{

    int gdriver=DETECT, gmode, error, x0, y0, x1, y1;

    initgraph(&gdriver, &gmode, "c:\\turboc3\\bgi");

    printf("Enter co-ordinates of first point: ");

    scanf("%d%d", &x0, &y0);

    printf("Enter co-ordinates of second point: ");

    scanf("%d%d", &x1, &y1);

    drawline(x0, y0, x1, y1);

   getch();

    return 0;

}

Output: