Download of Objective-C++ 6.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application relates to Developer Tools. You can execute this free app on Mac OS X 10.6 or later. The following versions: 6.0, 4.6 and 4.5 are the most frequently downloaded ones by the program users. This free Mac app was originally designed by John Holdsworth.
From the developer:
Objective-C++ enriches the syntax available to Objective-C coders when using foundation classes by using simple C++ wrapper objects that support string concatenation and access to foundation container members using subscript notation. This reduces the verbosity of Objective-C code allowing you to focus on the problem while adding features such as sparse arrays, regular expressions and complex recursive data structures.
You may want to check out more software for Mac, such as Tutorial for ObjectiveC, Objective-C to Java - O2J automatic source code translator or iMaster Objective C, which might be related to Objective-C++.