造数脚本

hyb

2025-12-23 c980682a1fe205d8c21d349e9fc6b9e4951aea34

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subroutine string_inout_optional(output)
    implicit none
    character*(32), optional, intent(inout) :: output
    if (present(output)) then
      output="output string"
    endif
end subroutine