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In this lesson, we have explained use cases of function pointer through code examples. In previous video, we had explained basics of function pointers.

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About event handling - You can think of a scenario where if something happens in a user interface, you want to perform some action. For example, upon a mouse click, you want to call some function. Many libraries give you a design where you can register a callback function to be called upon an event (like a mouse click). Library function will callback this function that you would register whenever the event occurs. Basically library function will call all functions registered for the event (stored in some list).

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