Q
What is the main advantage of nullptr (C++11) over NULL?
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A
It frees memory automatically
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B
It can be dereferenced safely
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C
It is faster
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D
It has its own type (std::nullptr_t) and is never mistaken for an integer during overload resolution
Correct Answer:
D. It has its own type (std::nullptr_t) and is never mistaken for an integer during overload resolution
Explanation:
NULL is often defined as 0, so f(NULL) may call f(int) instead of f(char*).
