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program array_op_5
implicit none
real :: a(2, 2, 2), b(2, 2, 2), c(2, 2, 2)
real :: d(2, 2, 2)
integer :: i, j, k
do i = 1, 2
do j = 1, 2
do k = 1, 2
a(i, j, k) = i*i + j*j + k*k
b(i, j, k) = 2*(i*j + j*k + i*k)
c(i, j, k) = 0
end do
end do
end do
d = asquare(a, b, c)
call check(d)
contains
function asquare(a, b, c) result(d)
implicit none
real :: a(:, :, :), b(:, :, :), c(:, :, :)
real :: d(2, 2, 2)
d = a + b + c
end function asquare
subroutine check(c)
implicit none
real, intent(in) :: c(:, :, :)
integer :: i, j, k
do i = lbound(c, 1), ubound(c, 1)
do j = lbound(c, 2), ubound(c, 2)
do k = lbound(c, 3), ubound(c, 3)
if(c(i, j, k) /= (i + j + k)**2) error stop
end do
end do
end do
end subroutine check
end program
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