c program countdown

c program countdown
This c graphics program performs countdown for 30 seconds.
C program countdown code
#include<graphics.h>
#include<dos.h>
#include<conio.h>

main()
{
int gd = DETECT, gm, i;
char a[5];

initgraph( &gd, &gm, "C:\\TC\\BGI");

settextjustify( CENTER_TEXT, CENTER_TEXT );
settextstyle(DEFAULT_FONT,HORIZ_DIR,3);
setcolor(RED);

for(i = 30 ; i >=0 ; i--)
{
sprintf(a,"%d",i);
outtextxy(getmaxx()/2, getmaxy()/2, a);
delay(1000);

if ( i == 0 )
break;
cleardevice();
}

getch();
closegraph();
return 0;
}