Analog Clock in C With Tic-Tic sound

This program fetches time from system every second and displays it in digital and analog clock and the clock.
This analog clock looks fantastic try and run this program you will see something like shown below and yes the "Path" in the initgraph() may vary for your system.

Code:

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>
#include<math.h>

#define arg_sec M_PI/30
#define arg_hour M_PI/6
#define arg_min M_PI/360
void main()
{
  int gd=DETECT,gm,sec=0,hour,min;
  int x1=0,y1=0,x2=0,y2=0,x3=0,y3=0;
  char *k[12]={"1","2","3","4","5","6","7","8","9","10","11","12"};
  struct time t;  // Used to get current time from system
    int i,a,b;
   int dig_sec;
 char digitalTime[14];

  initgraph(&gd,&gm,"C:\\TurboC3\\BGI");
  setcolor(RED);
  circle(300,200,200);
  circle(300,200,180);
  setfillstyle(1,BLUE);
  floodfill(300,390,RED);
  settextstyle(DEFAULT_FONT,0,2);
  for(i=1;i<13;i++)
    {
 a=160*cos(arg_hour*i-M_PI_2);
 b=160*sin(arg_hour*i-M_PI_2);
 outtextxy(a+300,b+200,k[i-1]);
    }

while(!kbhit())
   {
    setcolor(BLACK);
      line(300,200,x1+300,y1+200);
      line(300,200,x2+300,y2+200);
      line(300,200,x3+300,y3+200);
      gettime(&t);
      if(sec!=t.ti_sec)
 {
    sound(5000);
    delay(1);
    nosound();
 }
      hour=t.ti_hour;
      sec=t.ti_sec;
      min=t.ti_min;
      digitalTime[0]=hour/10+48;
      digitalTime[1]=hour%10+48;
      digitalTime[2]=':';
      digitalTime[3]=min/10+48;
      digitalTime[4]=min%10+48;
      digitalTime[5]=':';
      digitalTime[6]=sec/10+48;
      digitalTime[7]=sec%10+48;
      digitalTime[8]='\0';
      outtextxy(270,250,"ÛÛÛÛÛÛÛÛÛÛÛ");
      x1=150*cos(arg_sec*sec-M_PI_2)*0.98;
      y1=150*sin(arg_sec*sec-M_PI_2)*0.98;
      x2=150*cos(arg_sec*min-M_PI_2)*0.9;
      y2=150*sin(arg_sec*min-M_PI_2)*0.9;
      if(hour>12) hour-=12;
      x3=150*cos(arg_hour*hour-M_PI_2+arg_min*min)*0.6;
      y3=150*sin(arg_hour*hour-M_PI_2+arg_min*min)*0.6;
      setcolor(YELLOW);
      line(300,200,x1+300,y1+200);
      setcolor(CYAN);
      line(300,200,x2+300,y2+200);
      setcolor(WHITE);
      line(300,200,x3+300,y3+200);
      setcolor(YELLOW);
      outtextxy(270,250,digitalTime);
      delay(50);

   }

  getch();
  closegraph();
  restorecrtmode();
}