What happens to the stack when exiting a method?

Question

I was reading What and where are the stack and heap?. One thing I am a bit fuzzy on is what happens to the stack after a method exits. Take this image for example:

Answer 1

A stack is just that, a stack of things, usually a stack of frames, with the frames containing parameters, local variables and instances of objects, and some other things depending on your operating system.

If you have instantiated objects on the stack, i.e. MyClass x and not MyClass * x = new MyClass(), then the object x will be torn down and its destructor called when the stack is rewound to the previous frame, which essentially just makes the current stack pointer(internal) point to the previous frame. In most native languages no memory will be cleared, etc.

Finally this is why you should initialise local variables(in most languages) as a call to the next function will setup a new frame which will most likely be in the same place as the previously rewound stack frame, so your local variables will contain garbage.