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Engineering Computer Science C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)

To differentiate between virtual functions and pure virtual functions. Virtual functions v/s Pure virtual functions: A virtual function is a function that is declared in the base class and redefined in its derived classes. The keyword “virtual” precedes the function declaration in the base class. It must provide a definition at the time of declaration. It instructs the compiler to include dynamic binding in the program. A pure virtual function is a function that is declared in the base class with no definition. The class, including the pure virtual function or functions, becomes the abstract class. A derived class must define all inherited pure virtual functions of its base classes. The difference between the virtual function and pure virtual function is as below: virtual function Pure virtual function It contains a definition in the class in which it is declared. It is only declared but with no definition. The function definition is redefined in the derived class. A derived class must define all inherited pure virtual functions of its base classes. The class containing virtual function is not an abstract class. The class containing pure virtual function is an abstract class. The object of the base class containing virtual function can be created. No instances can be created as the class containing pure virtual function is called the abstract class. Interface classes cannot be created. Interface classes can be created. A sample class containing virtual function: //base class with a virtual function class Electronic { //denotes virtual function virtualvoidcreate() { cout <<"\n Virtual function of the base class..."; } } A sample class containing pure virtual function: //base class with a pure virtual function class Electronic { // declaration of pure virtual function by adding “=0” virtualvoidcreate()=0; }

To differentiate between virtual functions and pure virtual functions. Virtual functions v/s Pure virtual functions: A virtual function is a function that is declared in the base class and redefined in its derived classes. The keyword “virtual” precedes the function declaration in the base class. It must provide a definition at the time of declaration. It instructs the compiler to include dynamic binding in the program. A pure virtual function is a function that is declared in the base class with no definition. The class, including the pure virtual function or functions, becomes the abstract class. A derived class must define all inherited pure virtual functions of its base classes. The difference between the virtual function and pure virtual function is as below: virtual function Pure virtual function It contains a definition in the class in which it is declared. It is only declared but with no definition. The function definition is redefined in the derived class. A derived class must define all inherited pure virtual functions of its base classes. The class containing virtual function is not an abstract class. The class containing pure virtual function is an abstract class. The object of the base class containing virtual function can be created. No instances can be created as the class containing pure virtual function is called the abstract class. Interface classes cannot be created. Interface classes can be created. A sample class containing virtual function: //base class with a virtual function class Electronic { //denotes virtual function virtualvoidcreate() { cout <<"\n Virtual function of the base class..."; } } A sample class containing pure virtual function: //base class with a pure virtual function class Electronic { // declaration of pure virtual function by adding “=0” virtualvoidcreate()=0; }

Solution Summary: The author explains the difference between virtual functions and pure virtual function. A pure function is a function declared in the base class with no definition.

C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)

C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)

10th Edition

ISBN: 9780134583006

Author: Deitel

Publisher: PEARSON

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Chapter 12, Problem 12.7E

Chapter 12, Problem 12.9E

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Chapter 12 Solutions

C++ How To Program Plus Mylab Programming With Pearson Etext -- Access Card Package (10th Edition)

Ch. 12 - (Programming in the General) How is it that...Ch. 12 - (Polymorphism vs. switch logic) Discuss the...Ch. 12 - (Inheriting Interface vs. Implementation)...Ch. 12 - Prob. 12.6E Ch. 12 - Prob. 12.7E Ch. 12 - Prob. 12.8E Ch. 12 - Prob. 12.9E Ch. 12 - (Polymorphic Application) You've been asked to...Ch. 12 - (Payroll-System Modification) Modify the payroll...Ch. 12 - Prob. 12.12E

Ch. 12 - (Polymorphic Banking Program Using Account...Ch. 12 - Prob. 12.14E Ch. 12 - (Carbon Footprint Abstract Class: Polymorphism)...

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