例: DateNumber function

Print DateNumber(1999, 10, 8)          ' Prints 10/8/99
' The following two functions calculate a past date
' using negative arguments.
' Print the date 5 months and 10 days before 2/4/99.
Print DateNumber(99, 2 - 5, 4 - 10)    ' Prints 8/25/98
' Print the date 3 months and 6 days before 1/1/99.
Print DateNumber(99, -3, -6)           ' Prints 8/25/98