You know that an overloaded assignment operator and a copy...

Name: Problem 7, Chapter 15: Problem Solving with C++
Uploaded: 2020-06-25T21:31:59-08:00
Duration: 57 s
Channel: Aditya Sood
Description: You know that an overloaded assignment operator and a copy constructor are not inherited. Does this mean that if you do not define an overloaded assignment operator or a copy constructor for a derived class, then that derived class will have no assignment operator and no copy constructor?

You know that an overloaded assignment operator and a copy constructor are not inherited. Does this mean that if you do not define an overloaded assignment operator or a copy constructor for a derived class, then that derived class will have no assignment operator and no copy constructor?

Key Concepts

Overloaded Assignment Operator

The overloaded assignment operator is used to copy the contents from one object to another already existing object. For derived classes that do not define their own assignment operator, the compiler provides a default version that performs memberwise assignment to both the base and derived portions of the object. This default behavior ensures that the derived object is correctly assigned even though the base class’s operator is not inherited.

Compiler-Generated Special Member Functions

In C++, if a class does not explicitly define certain special member functions such as the copy constructor or the assignment operator, the compiler automatically generates them. This generation follows specific rules, performing default memberwise copying or assignment to all members, including those inherited from a base class. This feature allows derived classes to have these critical functions even though they are not directly inherited from the base class.

Copy Constructor

A copy constructor is a special member function that initializes an object using another object of the same class. In a derived class, if you do not define a copy constructor, the compiler will automatically generate one that calls the base class's copy constructor and then copies the derived class's members. This ensures that all parts of the object, including those inherited from the base class, are properly initialized.

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