Graphics Horizontal Line...........tested on Win XP

/*   .......tested on Win XP      */

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void main(void)
{
   int gd=DETECT,gm,x,y=50;
   clrscr();
   initgraph(&gd,&gm,"c:\\tc\\bgi"); /*Sometimes it may be  "C:\\TC\\BGI"  , It depends machine to mac..*/
   for(x=90;x<400;x++)
   putpixel(x,y,RED);
   getch();
   closegraph();
   }