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What is the difference between a reference and a pointer in C++?

A A reference must be initialised, cannot be null and cannot be reseated
B A reference can be null
C A pointer must be initialised at declaration
D There is no practical difference

Answer

A reference must be initialised, cannot be null and cannot be reseated

A reference is not inherently safe, however. It can still dangle if the referenced object is destroyed while the reference remains in scope.

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