Defining a class in separate files: User can separate the file by using three files such as interface file, implementation file and application file. Interface file: This file contains the definition of class. The name of interface header file ends in “.h”. This file also contains declaration of any function such as member function or friend function and overloaded operators that describes basic operations for the class. This file contains comments for given function and operators are used. Implementation file: Implementation file contains the definitions for all declared functions and overloaded operations in interface file. This file also contains member variables. This file must have an include directive. The given directive is represented by the quotes around the name of file. Example: #include "sample.h". The interface and implementation file usually contains the same name but end with different suffixes. Application file: The application file contains the main part of the program. This file also contains any additional declaration of function and constant declaration. This file also must contain an include directive of the interface file name.

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Chapter 12.1, Problem 3STE

Program Plan Intro

Defining a class in separate files:

User can separate the file by using three files such as interface file, implementation file and application file.

Interface file:

This file contains the definition of class.

The name of interface header file ends in “.h”.

This file also contains declaration of any function such as member function or friend function and overloaded operators that describes basic operations for the class.

This file contains comments for given function and operators are used.

Implementation file:

Implementation file contains the definitions for all declared functions and overloaded operations in interface file.

This file also contains member variables.

This file must have an include directive.

The given directive is represented by the quotes around the name of file.

Example: #include "sample.h".

The interface and implementation file usually contains the same name but end with different suffixes.

Application file:

The application file contains the main part of the program.

This file also contains any additional declaration of function and constant declaration.

This file also must contain an include directive of the interface file name.

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