#include <conio.h>
#include <stdio.h>
#include<graphics.h>
int gdriver=DETECT,gmode;
initgraph(&gdriver,&gmode,"c:\\tc\\bgi");
int main()
{
   setcolor(RED);
   rectangle(3,3,3,3);
}

rectangle(x1,y1,x2,y2)

int gdriver=DETECT,gmode;
initgraph...........

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
int main(void)
 {
 int gdriver=DETECT,gmode;
 initgraph(&gdriver,&gmode,"C:\\bc3\\bgi");
 setcolor(GREEN);
 rectangle(100,150,150,200);
 setcolor(RED);
 line(100,150,150,200);
 line(100,200,150,150);
 getch();
 closegraph();
 return(0);
 }

setfillstyle(Type,Color);
bar(x1,y1,x2,xy);