/*----------------------------------------------------------------------------*/
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say "NoArgRoutineReturn123()    :" pp(NoArgRoutineReturn123())
say
say "calling a routine that returns nothing:"
call NoArgRoutineVoid
say
say "OneArgRoutineReturnArg(1)  :" pp(OneArgRoutineReturnArg(1))
say "OneArgRoutineReturnArg( )  :" pp(OneArgRoutineReturnArg())
say
say "calling another routine that returns nothing:"
call OneArgRoutineVoid 2
say
say "TwoIntArgAdder(4, 5)       :" pp(TwoIntArgAdder(4, 5))
say "TwoDoubleArgAdder(6  , 8  ):" pp(TwoDoubleArgAdder(6  , 8  ))
say "TwoDoubleArgAdder(6.7, 8.9):" pp(TwoDoubleArgAdder(6.7, 8.9))
say "---"

say "Invoking an external routine with wrong arguments:"
say "TwoIntArgAdder(9.8, 7.6)   :" pp(TwoIntArgAdder(9.8, 7.6))

::routine pp   -- return string value enclosed in square brackets
  return "["arg(1)"]"

::routine NoArgRoutineReturn123  external "library external_routines NoArgRoutineReturn123"
::routine NoArgRoutineVoid       external "library external_routines NoArgRoutineVoid"
::routine OneArgRoutineReturnArg external "library external_routines OneArgRoutineReturnArg"
::routine OneArgRoutineVoid      external "library external_routines OneArgRoutineVoid"
::routine TwoDoubleArgAdder      external "library external_routines TwoDoubleArgAdder"