Question: A pointer variable can contain a pointer to a single variable, a pointer to an array, NULL, or a random value. Write code that creates

A pointer variable can contain a pointer to a single variable, a pointer to an array, NULL, or a random value. Write code that creates and sets four pointer variables a, b, c, and d to show each of these possibilities.

Implement a function firstlast that obtains the first and last values in an array of integers and stores the result in an array argument.

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