## 10.1.9. Mixed-Language Operability

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The C++ language interface provides functions listed below for mixed-language operability. These functions provide for a seamless transition between C and C++. For the case where the C++ class corresponding to `<CLASS>` has derived classes, functions are also provided for converting between the derived classes and the C `MPI_<CLASS>`.

`MPI::<CLASS>& MPI::<CLASS>::operator=(const MPI_<CLASS>& data)
`

`MPI::<CLASS>(const MPI_<CLASS>& data)
`

`MPI::<CLASS>::operator MPI_<CLASS>() const
`

These functions are discussed in Section Transfer of Handles .

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MPI-2.0 of July 18, 1997
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