I am looking for an example of C/C++ app that uses the same code to run on Android via JNI and iOS
Ideally some kind of open source github project that I can pick apart, or maybe something part of a tutorial
hoping the collective conscious can at least guide me in the right direction here. we can ask for examples right?
In your comments you mention wanting something graphical. Check out Cocos2D-X, a C++ game engine with various implementations (iOS and Android being two).