Implementation of DDA line drawing algorithm

#include
#include
#include
#include<math>

void main()
{
    int Xs,Ys,Xe,Ye;
    float X,Y,m;
    int gd=DETECT,gm ;
    initgraph(&amp;gd,&amp;gm,"C:\\tc\\bgi");
    printf ("Enter the value of (Xs , Xs ) &amp; (Xe , Ye)\n");
    scanf ("%d%d%d%d", &amp;Xs ,&amp;Ys , &amp;Xe , &amp;Ye);
    X = abs(Xs);
    Y = abs(Ys);
    m=(Ye-Ys)/(Xe-Xs);
    cleardevice( );
    if(m&lt;1)
    {
        putpixel (X,Y,RED);
        while(Y!=Ye)
        {
            X=X+1;
            Y=abs(Y+m);
            putpixel (X,Y,RED) ;
        }
    }
    else
    {
        putpixel(X,Y,RED);
        while(X!=Xe)
        {
            Y=Y+1;
            X=abs(X+(1/m));
            putpixel(X,Y,RED);
        }
    }
    getch ( );
    closegraph ( );
}

#include

#include<math>

void main()

{

int Xs,Ys,Xe,Ye;

float X,Y,m;

int gd=DETECT,gm ;

initgraph(&gd,&gm,"C:\\tc\\bgi");

printf ("Enter the value of (Xs , Xs ) & (Xe , Ye)\n");

scanf ("%d%d%d%d", &Xs ,&Ys , &Xe , &Ye);

X = abs(Xs);

Y = abs(Ys);

m=(Ye-Ys)/(Xe-Xs);

cleardevice( );

if(m<1)

{

putpixel (X,Y,RED);

while(Y!=Ye)

{

X=X+1;

Y=abs(Y+m);

putpixel (X,Y,RED) ;

}

else

{

putpixel(X,Y,RED);

while(X!=Xe)

{

Y=Y+1;

X=abs(X+(1/m));

putpixel(X,Y,RED);

}

getch ( );

closegraph ( );

}

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