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Pointer in C

What is pointer? What significance of pointer in C programming languages?

   Related Questions in Programming Languages

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    Public interface: The members of a class prefixed with public access modifier. All these members are visible to each and every class in a program.

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    Shortcut key: A key-press related with a component in a Graphical User Interface (abbreviated as GUI) which provides an alternative to choosing the component's operation with mouse.

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    Explain Downcast with example: It is a cast towards an object's dynamic kind - that is, `down' the inheritance hierarchy. For illustration:        // Downcast from Object to String

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