In the C programming language, A Null pointer is a pointer that is a variable with the value assigned as zero or having an address pointing to nothing. So we use the keyword NULL to assign a variable to be a Null pointer in C. It is a predefined macro.

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A null pointer is a specialized pointer in programming that does not point to any valid memory address, typically representing an unassigned, uninitialized, or invalid state. Often defined by a NULL macro (value 0 or void*0) in C/C++, it is used to safely signify that a pointer is not currently pointing to an object.

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