For C/C++ interviews: pointer vs reference vs address-of operator.

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Pointer vs reference (C++) Pointer Reference Syntax int* p int& r Null Can be nullptr Must bind to object Rebind Can point elsewhere Cannot reseat & address-of gives pointer; * dereferences. References are aliases—often for parameters to avoid copy. Java has references without pointer arithmetic—mention if interview is C++ specific.

	Pointer	Reference
Syntax	`int* p`	`int& r`
Null	Can be nullptr	Must bind to object
Rebind	Can point elsewhere	Cannot reseat