Fortran Wiki


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


Fortran 95 and later, with kind argument Fortran 2003 and later


Inquiry function


result = size(array[, dim [, kind]])


  • 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.


program test_size
  write(*,*) size((/ 1, 2 /))    ! 2
end program

See also

shape, reshape

category: intrinsics