Can a pointer of a base class type point to an object of derived class type?

Explanation: A base class pointer can point to a derived class object, but we can only access base class member or virtual functions using the base class pointer because object slicing happens when a derived class object is assigned to a base class object.

Can the pointer of base class point to the object of its derived class if yes why C++ compiler supports this type incompatibility?

Base class pointer cannot point to derived class. Pointer to derived class cannot be created.

Can we assign derived class object to base?

In C++, a derived class object can be assigned to a base class object, but the other way is not possible.

What can hold the address of a pointer to the base class A base class object 8 derived class object?

Discussion Forum

Can you create an object of an empty class type?

C++ allows creating an Empty class, yes! We can declare an empty class and its object. The declaration of Empty class and its object are same as normal class and object declaration.

What is a pointer How do you declare a pointer to a class and an object?

A pointer to a C++ class is done exactly the same way as a pointer to a structure and to access members of a pointer to a class you use the member access operator -> operator, just as you do with pointers to structures. Also as with all pointers, you must initialize the pointer before using it.

What classes Cannot be base class?

A sealed class cannot be used as a base class. For this reason, it cannot also be an abstract class. Sealed classes prevent derivation. Because they can never be used as a base class, some run-time optimizations can make calling sealed class members slightly faster.

Which class Cannot be a base class in Java?

Explanation: When a class have more than one nested classes, it is known as enclosing class. It can’t be called as parent or base class since there is no inheritance involved.

Can we assign parent object to child objects?

The reference variable of the Parent class is capable to hold its object reference as well as its child object reference.

Can you call a parent class method from child class object?

If you override a parent method in its child, child objects will always use the overridden version. But; you can use the keyword super to call the parent method, inside the body of the child method.

Is it possible to create an object of an empty class type such as if so what is the size of such an object?

CPP. The size of an empty class is not zero. It is 1 byte generally. It is nonzero to ensure that the two different objects will have different addresses.

Can we create an object of an empty class type Mcq?

d. It is not possible to create an empty class.

Can I assign a base class object to a derived class?

If assign an address from a base class pointer into a derived class pointer, you can potentially assign a base class object to a derived class pointer. You run the risk of accessing derived class members when you don’t have a derived class.

How do you assign a base pointer to a derived pointer?

A derived pointer cannot be assigned a pointer to a base type without casting simply because it cannot tell if the base pointer is of the Derived type or one of its children. If assign an address from a base class pointer into a derived class pointer, you can potentially assign a base class object to a derived class pointer.

Can a pointer of one class point to another class?

Pointer is a data type that stores the address of other data types. A derived class is a class which takes some properties from its base class. It is true that a pointer of one class can point to other class, but classes must be a base and derived class, then it is possible. To access the variable of the base class, base class pointer will be used.

What is the difference between base class and base pointer?

So, a pointer is type of base class, and it can access all, public function and variables of base class since pointer is of base class, this is known as binding pointer. In this pointer base class is owned by base class but points to derived class object.