iPhone save game state

I'm implementing a save game feature to my game, so I'm looking for the best way to store the saved game.

Since I'm using C++ everywhere it's possible, I can't use NSKeyedArchiver to store the state of the game. I am thinking开发者_如何学Python in saving the state manually in a file, so I have a questions about that:

In which subfolder of apphome should I save that file? Looking into the iOS Programming Guide I didn't found a folder that perfeclty fit that need. Should I create a custom subfolder in Library or am I missing something?

Thanks in advance

Write the file into the Documents directory (NSDocumentDirectory). Thats the path to save your stuff, you can alter its content in any way by eg. adding subfolders for your save games or whatever. DON'T save it inside the library folder!