The KTClusCXX package is based on the physics described in: The main reference: S. Catani, Yu.L. Dokshitzer, M.H. Seymour and B.R. Webber, Nucl.Phys.B406(1993)187. The ep version: S. Catani, Yu.L. Dokshitzer and B.R. Webber, Phys.Lett.285B(1992)291. The inclusive reconstruction method: S.D. Ellis and D.E. Soper, Phys.Rev.D48(1993)3160. And aims to emulate the 'ktclus.f' package by M.~Seymour, 1992-2010, but uses a new FastJet techniques, e.g. the NNH strategy and object-orinted approach. --- The code 'example.cc' illustrates a basic usage of the package.