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

void main()
  {
    struct dosdate_t date;
    struct dostime_t time;

    /* Get and display the current date and time */
    _dos_getdate( &date );
    _dos_gettime( &time );
    printf( "The date (MM-DD-YYYY) is: %d-%d-%d\n",
        date.month, date.day, date.year );
    printf( "The time (HH:MM:SS) is: %.2d:%.2d:%.2d\n",
        time.hour, time.minute, time.second );

    /* Change it to the turn of the century */
    date.year = 1999;
    date.month = 12;
    date.day = 31;
    time.hour = 23;
    time.minute = 59;
    _dos_setdate( &date );
    _dos_settime( &time );
    printf( "New date (MM-DD-YYYY) is: %d-%d-%d\n",
                  date.month, date.day, date.year );
    printf( "New time (HH:MM:SS) is: %.2d:%.2d:%.2d\n",
                  time.hour, time.minute, time.second );
  }