What is dynamic type of object

Question

What i think is that dynamic type means dynamically allocated object using new. In the following case, do you say p points to dynamic type or stati

Answer 1

What i think is that dynamic type means dynamically allocated object using new.

Nope.

The dynamic type is the real type of an object that might be accessed via a reference (pointer included) that point to a base type of its real type.

That is, if we have :

class A {

};

class B : public A { };


B l;
A& k = l;

Here k is a reference to an object of type A, but the real type of the referred object, its dynamic type, is B.

Here "dynamic" has the meaning of "known only at run-time".