<p>I want to use the <a href="http://nltk.sourceforge.net/index.php/Main_Page" rel="noreferrer">nltk</a> libraries in c++. </p>

<p>Is there a glue language/mechanism I can use to do this? </p>

<p>Reason:
I havent done any serious programming in c++ for a while  and want to revise NLP concepts at the same time.</p>

<p>Thanks</p>

I haven't tried directly calling Python functions from C++, but here are some alternative ideas...
Generally, it's easier to call C++ code from a high-level language like Python than the other way around.  If you're interested in this approach, then you could create a C++ codebase and access it from Python.  You could either directly use the external API provided by python [it should be described somewhere in the Python docs] or use a tool like SWIG to automate the C++-to-Python wrapping process.
Depending on how you want to use the library, you could alternatively create Python scripts which you call from C++ with the
exec*
functions.