LBound Function

Description

Returns the smallest available subscript for the indicated dimension of an array.

Syntax

LBound(arrayname[, dimension])

The LBound function syntax has these parts:

Part

Description

arrayname

Name of the array variable; follows standard variable naming conventions.

dimension

Whole number indicating which dimension’s lower bound is returned. Use 1 for the first dimension, 2 for the second, and so on. If dimension is omitted, 1 is assumed.


Remarks

The LBound function is used with the UBound function to determine the size of an array. Use the UBound function to find the upper limit of an array dimension.

LBound returns the values listed in the table below for an array with the following dimensions:


Dim A(1 To 100, 0 To 3, -3 To 4)

Statement

Return Value

LBound(A, 1)

1

LBound(A, 2)

0

LBound(A, 3)

-3


The default lower bound for any dimension is either 0 or 1, depending on the setting of the Option Base statement.

Arrays for which dimensions are set using the To clause in a Dim, Private, Public, ReDim, or Static statement can have any integer value as a lower bound.

See Also

Dim Statement, Option Base Statement, Private Statement, Public Statement, ReDim Statement, Static Statement, UBound Function.

Example

This example uses the LBound function to determine the smallest available subscript for the indicated dimension of an array. Use the Option Base statement to override the default base array subscript value of 0.


Dim MyArray(1 To 10, 5 To 15, 10 To 20)     ' Declare array variables.AnyArray(10)= LBound(MyArray, 1)             ' Returns 1.= LBound(MyArray, 3)            ' Returns 10.= LBound(AnyArray)                ' Returns 0 or 1, depending on
                                    ' setting of Option Base.