MKDATE(IEXP1,IEXP2,IEXP3) (DATE)

 Function
  Create a complete date from separate year, month and day values.

 Syntax
  MKDATE(year,month,day)

   year  = An integer expression with the year (1900 through 2079).
   month = An integer expression with the month (1 through 12).
   day   = An integer expression with the day of the month (1 through 31).

 Return Type & Value
  DATE
  Returns a date made from the specified year, month and day values.

 Remarks
  Although PPL does it's best to automatically convert values from one
  type to another as needed, converting STRING values to DATE values
  presents a special problem because of the year portion of the date.
  Normally the year is only expressed in a two digit format.  This limits
  the automatic convertion to a single 100 year period.  PCBoard uses year
  values greater than or equal to 80 as 20th century (19XX) dates, and year
  values less than 80 as 21st century (20XX) dates.  Since you may need to
  access dates prior to 1980 (when processing birthdates, for example),
  this function allows you to take three integers (year, month and day) and
  build any date necessary.

 Examples
  PRINTLN "My birthdate is ",MKDATE(1967,10,31)
  INTEGER y,m,d
  INPUTINT " Your birth year",y,@X0E
  INPUTINT "Your birth month",m,@X0E
  INPUTINT "  Your birth day",d,@X0E
  PRINTLN "Your birthdate is ",MKDATE(y,m,d)
  IF (MKDATE(y,m,d) < MKDATE(1967,10,31)) THEN
    PRINTLN "You are older than me"
  ELSE IF (MKDATE(y,m,d) > MKDATE(1967,10,31)) THEN
    PRINTLN "I am older than you"
  ELSE
    PRINTLN "We are the same age"
  ENDIF