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                               dos_settime

   Usage
   #include <dos.h>
   int dos_settime(struct dos_time_t *time);

   Description
   Sets  the current system via a call to DOS function 0x2d (45)  to  the
   values passed in the structure pointed to by time. The format of  this
   structure is as follows:

   struct dos_time_t
   {
   charhour;
   /* hours (0-23) */
   charminute;
   /* minutes (0-59) */
   charsecond;
   /* seconds (0-59) */
   charhsecond;
   /* hundredths of a second (0-99) */
   }
   Example
   #include <stdio.h>
   #include <dos.h>

   main()
   {
   struct dos_time_t time;
   char oh;

        dos_gettime(&time);
        printf("Time is %02d:%02d:%02d:%02d\n"
                  ,time.hour,time.minute,time.second,time.hsecond);

        oh = time.hour;
        time.hour = 4;
        dos_settime(&time);
        dos_gettime(&time);
        printf("Time is %02d:%02d:%02d:%02d\n"
                  ,time.hour,time.minute,time.second,time.hsecond);

        time.hour = oh;
        dos_settime(&time);
        dos_gettime(&time);
        printf("Time is %02d:%02d:%02d:%02d\n"
                  ,time.hour,time.minute,time.second,time.hsecond);
   }

   Return Value
   0  if  successful, otherwise returns the DOS error code  if  the  time
   passed was invalid.