Join Date:Joined: Sep 2014
The biggest advantage for me is that you can have a shared codebase between the platforms.
The best example is creating cross-platform games. If you write the game code in C++ you only need to write a small amount of code specific for current platform (e.g. Android) that just runs your C++ code right after the start.
Just take a look at Cocos2D-x game engine project (its open-source) and how many platforms it supports because its written in C++.