View on the issue of switching please advise

For example, I view A view pop-B, B C view pop-up view ..
If I want to return directly to A from C, then I know you can pop directly by the C A.
But whether on the problem that way???
I had hoped that after returning from C A B C shells were destroyed on the left A.
But if C A pop-up way to return, then in fact the memory should be A B C A are present in it, it happened leaked

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I read the words of this sentence you for a long time. . .
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I also read a long time, did not understand! There bringSubviewToFront method
Do not know what you want
Reply:
[Self.navigationController popViewControllerAnimated: YES];
Try it. . .
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Good mouthful. . . Go with what you are. Navigation controller do?
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But if C A pop-up way to return

Oh Oh lord, please study "object-oriented foundation"

Your words should be called A1 pop (push) the B1, B1 pops up C1, C1 this time you can return (pop) 2 times to A1, can continue to pop A2, but this is not a return to the pop-up, push is always a push, can u catch that?
Make sure you know what is Class, and what is instance
A1! = A2 but A1 & A2 ∈ A