Postgresql function in C++

On august 2001 Eniar wrote above this issue the following:

"On Tue, Aug 07, 2001 at 07:49:06AM -0500, Phillip J. Allen wrote:
> Hi all,
>
> I was reading Bruce Momjian book on PostgreSQL and his chapter on user
> created functions stated that functions can be written in SQL, PL/PGSQL,
> PL/TCL, PL/Per, and C. But I have been studying C++ for linux. So can
> I create a dynamically linked object file in C++ and reference it in a
> function?
>
The easiest way is to write C-wrappers around your C++ code.

- Einar Karttunen

"

I would like if it is possible to build a PostgreSQL function in C++. I
have a code generator to solve the problem to communicate postgresql with
other database (postgresql included).

Some little example will be enough.

Thanks