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8.252 SIZE — Determine the size of an array ¶

Description:

Determine the extent of ARRAY along a specified dimension DIM, or the total number of elements in ARRAY if DIM is absent.

Standard:

Fortran 90 and later, with KIND argument Fortran 2003 and later

Class:

Inquiry function

Syntax:

RESULT = SIZE(ARRAY[, DIM [, KIND]])

Arguments:

ARRAY	Shall be an array of any type. If ARRAY is a pointer it must be associated and allocatable arrays must be allocated.
DIM	(Optional) shall be a scalar of type INTEGER and its value shall be in the range from 1 to n, where n equals the rank of ARRAY.
KIND	(Optional) An INTEGER initialization expression indicating the kind parameter of the result.

Return value:

The return value is of type INTEGER and of kind KIND. If KIND is absent, the return value is of default integer kind.

Example:

PROGRAM test_size
  WRITE(*,*) SIZE((/ 1, 2 /))    ! 2
END PROGRAM

See also:

SHAPE — Determine the shape of an array, RESHAPE — Function to reshape an array