Array pointers
An array with the POINTER attribute is
referred to as an array pointer. Its bounds and shape
are determined when it is associated with a target through the following
ways:
- Pointer assignment
- Argument association
- Execution of an ALLOCATE statement
Example
The following example declares an array pointer and determines its bounds and storage association.
REAL, POINTER, DIMENSION(:, :) :: b
REAL, TARGET, DIMENSION(5, 10) :: c, d(10, 10)
b => c ! Bounds of b are now defined (1:5, 1:10)
b => d ! b now has different bounds and is associated with different storageIf you use the following ALLOCATE statement and compile your program with the -qinitalloc option, all elements of the array pointer b are initialized to zero.
ALLOCATE(b(5, 5)) ! Change bounds and storage association againRelated information
- Pointer association
- ALLOCATE
- The -qinitalloc option
