The [[LBOUND]] function returns the smallest valid index (lower bound) of an array dimension.


{{PageSyntax}}
:{{Parameter|result%}} = [[LBOUND]]({{Parameter|arrayName}}[, {{Parameter|dimension%}}])


{{PageDescription}}
* {{Parameter|arrayName}} specifies the name of the array.
* {{Parameter|dimension%}} specifies the dimension number, starting with &lt;code>1&lt;/code> for the first dimension.
** If omitted, {{Parameter|dimension%}} is assumed to be &lt;code>1&lt;/code>.
** If {{Parameter|dimension%}} is less than &lt;code>1&lt;/code> or is greater than the number of dimensions, a [[ERROR Codes|subscript out of range]] error occurs.
* [[LBOUND]] and [[UBOUND]] are used to determine the range of valid indexes of an array.


{{PageExamples}}
{{CodeStart}}{{Cl|DIM}} myArray(5) {{Cl|AS}} {{Cl|INTEGER}}
{{Cl|DIM}} myOtherArray(1 to 2, 3 to 4) {{Cl|AS}} {{Cl|INTEGER}}

{{Cl|PRINT}} {{Cl|LBOUND}}(myArray)
{{Cl|PRINT}} {{Cl|LBOUND}}(myOtherArray, 2)
{{CodeEnd}}
{{OutputStart}} 0
 3
{{OutputEnd}}


{{PageSeeAlso}}
* [[Arrays]], [[UBOUND]]
* [[DIM]], [[COMMON]], [[STATIC]], [[SHARED]]


{{PageNavigation}}
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