3. What if I need ReSharper to support both .NET languages and C++?
Starting August 6, 2020, the ReSharper license covers both ReSharper and ReSharper C++, so the ReSharper holders are welcome to use both extensions. There is also C++/CLI, a bridge between C# and C++, which can be better served by using a combination of both flavors of ReSharper (read more).
However, this is not the only possible way to use both ReSharper and ReSharper C++. You can subscribe to either dotUltimate (which covers ReSharper, ReSharper C++, Rider, dotCover, dotTrace, and dotMemory) or the All Products Pack.