Graphics Triangle Figure C Program

 /*   .......Works on Win XP      */

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

   for(y=50;y<=x;y++)
   putpixel(x,y,RED);
   }
   getch();
   closegraph();
   }