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Please tell me about all the variations of these above types of questions that can be asked?

1 Answer

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Refer these two link, these two posts are enough to understand about the pointers(some basic are required). Feel free to ask if you don't get something.

https://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome?rq=1

https://stackoverflow.com/questions/18481740/pointer-expressions-ptr-ptr-and-ptr (examples like you asked in your question).

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