Exception in Destructor C++

Question

I am well aware of the fact that one should not throw any exception in destructor.

But as a part of making my grip on this concept,I coded this example :-

Answer 1

In your example, A() construct a temporary variable for A then destructs it immediately. Thus throw 10; is never executed.

The throw statement taking place is in the destructor for A. When executing A::~A(), the program is not unwinding (i.e. cleaning up state from an exception) at that point. See "Destructors that throw" for example.