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

void DelayTimeMs(int t)
{
  unsigned int i,j,k,l;
  for (i=0; i<t; i++) for (j=0; j<200; j++) k=i*j;
}
void  main()
{ int sec,min,hour;
  int day,mon,year;
  int quit=0,c;
#ifdef  __TURBOC__
  struct date _date;
  struct time _time;
#else
  struct dosdate_t _dos_date;
  struct dostime_t _dos_time;
#endif


 while(!quit)
    {
#ifdef  __TURBOC__
     getdate(&_date);
     gettime(&_time);
     printf("\n%02d-%02d-%4d ",_date.da_mon,_date.da_day,_date.da_year);
     printf("%2d:%02d:%02d",_time.ti_hour,_time.ti_min,_time.ti_sec);
#else
     _dos_getdate(&_dos_date);
     _dos_gettime(&_dos_time);
     printf("\n%02d-%02d-%4d ",_dos_date.month,_dos_date.day,_dos_date.year);
     printf("%2d:%02d:%02d",_dos_time.hour,_dos_time.minute,_dos_time.second);
#endif
     DelayTimeMs(500);				  /* delay about 0.5 sec */

#ifdef  __TURBOC__
     getdate(&_date);
     gettime(&_time);
     printf("\n%02d-%02d-%4d ",_date.da_mon,_date.da_day,_date.da_year);
     printf("%2d:%02d:%02d",_time.ti_hour,_time.ti_min,_time.ti_sec);
#else
     _dos_getdate(&_dos_date);
     _dos_gettime(&_dos_time);
     printf("\n%02d-%02d-%4d ",_dos_date.month,_dos_date.day,_dos_date.year);
     printf("%2d:%02d:%02d",_dos_time.hour,_dos_time.minute,_dos_time.second);
#endif
     DelayTimeMs(500);			   /* delay about 0.5 sec */

     if (kbhit())			   /* check user keyboard */
       {
       c=getch();			   /* get user's key-in   */
       if ((c=='q')|| (c=='Q')) quit=1;    /* return to ROM-DOS   */
       else if(c=='s' || c=='S')
	  { /* set date time */
	    printf("\nSet Date(month/dat/year):");
	    scanf("%d/%d/%d",&mon,&day,&year);
#ifdef  __TURBOC__
	    _date.da_year=year;
	    _date.da_mon=mon;
	    _date.da_day=day;
	    setdate(&_date);
	    printf("\nSet Time(hour:min:sec):");
	    scanf("%d:%d:%d",&hour,&min,&sec);
	    _time.ti_hour=hour;
	    _time.ti_min=min;
	    _time.ti_sec=sec;
	    settime(&_time);
#else
	    _dos_date.year=year;
	    _dos_date.month=mon;
	    _dos_date.day=day;
	    _dos_setdate(&_dos_date);
	    printf("\nSet Time(hour:min:sec):");
	    scanf("%d:%d:%d",&hour,&min,&sec);
	    _dos_time.hour=hour;
	    _dos_time.minute=min;
	    _dos_time.second=sec;
	    _dos_settime(&_dos_time);
#endif
	  }
       }
    }
}