Question

When you define an ADT as a C++ class, what items are considered part of the interface for the ADT? What items are considered part of the implementation for the ADT?

Short answer

In a C++ class defining an Abstract Data Type (ADT), the interface consists of public member functions and public member variables, while the implementation consists of private member functions, private member variables, and the actual code that implements the functionality of the class. The interface specifies the operations that can be performed on the data, and the implementation provides the details of how these operations are carried out.

Step-by-step solution

Understanding Abstract Data Types (ADT)

An Abstract Data Type (ADT) is a high-level description of a collection of data and the operations that can be performed on that data. When an ADT is implemented using a C++ class, the class defines the data structure and the methods to manipulate the data.

Identifying Interface for ADT in a C++ class

The interface of an ADT in a C++ class represents the collection of public member functions and public member variables. These can be accessed and used by any code outside the class. It defines what operations can be performed on the data. Interface typically includes constructors, destructors, and member functions to manipulate the data stored in the class.

Identifying Implementation for ADT in a C++ class

The implementation of an ADT in a C++ class represents the details of how the class carries out the operations specified by the interface. It includes the definition of private member functions and private member variables. These are not accessible from the outside of the class and are used internally by the class to perform the operations. Implementation includes the actual code for the member functions, as well as any helper functions or variables that are needed to perform these operations. To summarize, in a C++ class defining an ADT: 1. Interface: Public member functions and public member variables. 2. Implementation: Private member functions, private member variables, and the actual code that implements the functionality of the class.