USAGE
   signed int sccdi2s(
           signed char *string,
           signed int format,
           signed int year,
           signed int month,
           signed int day );

PROTOTYPE IN
   sc_clock.h

DESCRIPTION
   sccdi2s converts three integer date values (year, month, and
   day) into an ASCIIZ string string using the date string style
   format. A check is made to verify that string is a valid date
   string before exiting.

   Date string styles:
   SC_GREGOR     mm/dd/yy
   SC_GREGORL    mm/dd/yyyy
   SC_JULIAN     yyyy/ddd
   SC_YMD        yyyymmdd
   SC_DMY        ddmmyy

EXAMPLE
   #include <stdio.h>
   #include <softc.h>
   #include <sc_clock.h>

   void main()
   {
     signed char d[9];

     sccdi2s(d,SC_YMD,1989,2,13);
     puts(d);
   }