As the title says… are they considered different languages? For example if you’ve written an application using a combination of C++ and Objective-C++ would you consider it to have been written in C++ and Objective-C, C++ and Objective-C++ or all three?
Obviously C and C++ are different languages even though C++ and C are directly compatible, how is the situation with Objective-C++ and Objective-C?
Objective-C++ simply allows Objective-C and C++ code to be mixed (with caveats). It’s not really a language on its own so much as a mechanism for allowing the two languages to intermix.