Question: What does the following C + + code snippet do ? int * ptr = nullptr; Causes a compilation error Declares a null reference ssigns

What does the following C++ code snippet do?
int *ptr = nullptr;
Causes a compilation error
Declares a null reference
ssigns the address of a variable to the pointer
Initializes a pointer variable with the value 0
What does the following C++ code snippet do? int *ptr =

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