The code in this edition in so-called C++ is just a copy-and-paste of the C edition code. All the functions have just been made members of ONE "NR" CLASS. The code presented brings none of the improvements that C++ could have brought. This turns this book into an ABSOLUTE RIP-OFF...Once again, this would only be useful for the explaination of the algorithms since the code in the C edition is a rather inefficient transcription of Fortran into C.