| module parent | |
| real, parameter :: pi = 4.*atan(1.) | |
| real :: tau | |
| interface | |
| module elemental real function pi2tau(pi) | |
| real, intent(in) :: pi | |
| end function pi2tau | |
| module subroutine good() | |
| end subroutine good | |
| end interface | |
| end module parent | |
| program main | |
| use parent | |
| tau = pi2tau(pi) | |
| print *,'pi=',pi, 'tau=', tau | |
| call good() | |
| end program |