User`s guide

C Utility Library

All indices and field name This format accesses an array element of

a multidim ensional array by specifying

indices. These statements access all four of

the elements of the array in the previous

example:

For I From 1 To 2

For J From 1 To 2

r(I, J) = x(I, J, "red")

g(I, J) = x(I, J, "green")

b(I, J) = x(I, J, "blue")

Array of indices and f ield

name

This format accesses an array element by

passing an array of indices and a field name.

The following example rewrites the previous

example using an index array:

Dim Index(1 To 2) As Integer

For I From 1 To 2

Index(1) = I

For J From 1 To 2

Index(2) = J

r(I, J) = x(Index, "red")

g(I, J) = x(Index, "green")

b(I, J) = x(Index, "blue")

With these four formats, the Item prope rty provides a very flexible indexing

mechanism for structure arrays. Also note:

• You can combine the last two indexing formats. Several index arguments

supplied in either scalar or array format are concatenated to form one

index set. The combining stops when the num ber of dimensions has been

reached. For example:

C-20