Array Indexing

C arrays always start at zero, but by default Fortran arrays start at 1. There are two usual ways of approaching indexing.

• You can use the Fortran default, as in the preceding example. Then the Fortran element B(2) is equivalent to the C element b[1].

• You can specify that the Fortran array B starts at B(0) as follows:

  ---

        INTEGER B(0:2)

  ---

  This way, the Fortran element B(1) is equivalent to the C element b[1].