UBOUND
Platform  x64, Win32, .NET 
Purpose 
To get the upper bound or upper bounds for the indexes of an array. 
Class 
Inquiry function. 
Syntax 
FUNCTION UBOUND (ARRAY [, DIM])
INTEGER DIM 
Description 
ARRAY is an array of any type. If it is a pointer it must be associated. If it
is an allocatable array, it must be allocated. If it is an assumedsize array,
DIM must be present with a value less than the rank of ARRAY.
DIM is a scalar with a value in the range 1 < DIM < n,
where n is the rank of ARRAY.
The result is a scalar integer or a onedimensional integer array (of default
type). It is scalar if DIM is present, otherwise, the result is an array of
size n
. 
Return value 
Case (i): For an array section or for an array expression, other than a
whole array or array structure component, UBOUND(ARRAY, DIM) has a value equal
to the number of elements in the given dimension; otherwise, it has a value
equal to the upper bound for subscript DIM of ARRAY. If dimension DIM has zero
size the result is zero.
Case (ii): UBOUND(ARRAY) has a value whose ith component is equal to
UBOUND(ARRAY, i), for i = 1, 2, ..., n
.

Example 
If A is declared by the statement REAL A(2:3, 7:10) then UBOUND(A) is
[3, 10] and UBOUND(A, DIM = 2) is 10. 

