Homework Answers
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Yes, If a derived class does not contain an overridden function for a pure virtual function in the base class, then objects of that derived class will not be allowed to be declared.
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If a derived class does not contain an overridden function for a pure virtual function in...
8. Virtual function is class function which expected to be redefined in class, so that when...
8. Virtual function is class function which expected to be redefined in class, so that when reference is made to derived class object using pointer then we can call virtual function to execute class definition version. [3] a) Base, derived, derived b) Derived, Derived, Derived c) Base, derived, base d) Base, base, derived
Question 3: Q3 (Polymorphism & virtual function) a) Consider the class, derived class, and the virtual functions as shown in Display for Q3. Create a derived class (of Sale) called 'Mailorder...
Question 3: Q3 (Polymorphism & virtual function) a) Consider the class, derived class, and the virtual functions as shown in Display for Q3. Create a derived class (of Sale) called 'MailorderSale' having one private member variable called 'shipping charge'. It should have constructor function and virtual function 'bill' (this function adds shipping charge to the price). Define all these functions (no need of default constructors). b) In the main function, define one object of DiscountSale with (11,10) initial values and...
please write the code in C++ 2 Base class File 3 Derived class PDF 3.1 Class...
please write the code in
C++
2 Base class File 3 Derived class PDF 3.1 Class declaration • The class PDF inherits from File and is a non-abstract class 1. Hence objects of the class PDF can be instantiated. 2. To do so, we must override the pure virtual function clone) in the base class • The class declaration is given below. • The complete class declaration is given below, copy and paste it into your file. . It is...
A virtual function is called using a reference to a base class. Discuss if the function...
A virtual function is called using a reference to a base class. Discuss if the function in base class is called or the function in the derived class and why?
A.3 - 10 pts It is legal to have a pure virtual destructor in a C++...
A.3 - 10 pts It is legal to have a pure virtual destructor in a C++ class as far as that destructor has a function body. Please explain the logic behind this requirement. int fu int fu Pure virtual functions in C++ can have function body implementation. Please explain a scenario when and how this implementation is used. Then please provide a sample code to access/invoke that original function code if it was overridden by a child class
This is In C++ only Thank you 2. Employee is a base class and Hourly Worker...
This
is In C++ only
Thank you
2. Employee is a base class and Hourly Worker is a derived class. Which statement about the destructors of both classes is true? al They should be declared virtual u Declaring them virtual or not does not make any difference c) They should be implemented as friend functions d) The destructor of HourlyWorker must be virtual whereas the destructor of Employee should 3. If a base class has a non-virtual member function called...
Pure Abstract Base Class Project. Define a class called BasicShape which will be a pure abstract class. The clas...
Pure Abstract Base Class Project. Define a class called BasicShape which will be a pure abstract class. The class will have one protected data member that will be a double called area. It will provide a function called getArea which should return the value of the data member area. It will also provide a function called calcArea which must be a pure virtual function. Define a class called Circle. It should be a derived class of the BasicShape class. This...
please write in c++. 4 Derived class JPG 4.1 Class declaration • The class JPG inherits...
please write in c++.
4 Derived class JPG 4.1 Class declaration • The class JPG inherits from File and is a non-abstract class. 1. Hence objects of the class JPG can be instantiated. 2. To do so, we must override the pure virtual function clone() in the base class. • The class declaration is given below. class JPG : public File { public: JPG(const std::string& n, int n, int w, const double rgb()) : File(...) { // ... } *JPG()...
what does this output? Derived *d = new Derived; delete d; and Base b; Derived d;...
what does this output? Derived *d = new Derived; delete d; and Base b; Derived d; given: class Base { public: Base() {std::cout << "Base Default Constructor" << std::endl;} Base(Base &base) {std::cout << "Base Copy Constructor" << std::endl;} virtual ~Base() {std::cout << "Base Destructor" << std::endl;} Base &operator=(const Base &base) {std::cout << "Base Overloaded Assignment" << std::endl; return *this;} }; class Derived : public Base { public: Derived() {std::cout << "Derived Default Constructor" << std::endl;} ~Derived() {std::cout << "Derived Destructor"...
Question 1 2 pts The preprocessor executes after the compiler. False True Question 2 2 pts...
Question 1 2 pts The preprocessor executes after the compiler. False True Question 2 2 pts What code is human-readable and follows the standards of a programming language? Secret code Source code Key code None of these Machine code Question 3 2 pts What is the symbol that marks the beginning of a one line comment? Question 1 2 pts The preprocessor executes after the compiler. True False Question 5 2 pts A statement that may be used to stop...
8. Virtual function is class function which expected to be redefined in class, so that when reference is made to derived class object using pointer then we can call virtual function to execute class definition version. [3] a) Base, derived, derived b) Derived, Derived, Derived c) Base, derived, base d) Base, base, derived
Question 3: Q3 (Polymorphism & virtual function) a) Consider the class, derived class, and the virtual functions as shown in Display for Q3. Create a derived class (of Sale) called 'MailorderSale' having one private member variable called 'shipping charge'. It should have constructor function and virtual function 'bill' (this function adds shipping charge to the price). Define all these functions (no need of default constructors). b) In the main function, define one object of DiscountSale with (11,10) initial values and...
please write the code in
C++
2 Base class File 3 Derived class PDF 3.1 Class declaration • The class PDF inherits from File and is a non-abstract class 1. Hence objects of the class PDF can be instantiated. 2. To do so, we must override the pure virtual function clone) in the base class • The class declaration is given below. • The complete class declaration is given below, copy and paste it into your file. . It is...
A.3 - 10 pts It is legal to have a pure virtual destructor in a C++ class as far as that destructor has a function body. Please explain the logic behind this requirement. int fu int fu Pure virtual functions in C++ can have function body implementation. Please explain a scenario when and how this implementation is used. Then please provide a sample code to access/invoke that original function code if it was overridden by a child class
This
is In C++ only
Thank you
2. Employee is a base class and Hourly Worker is a derived class. Which statement about the destructors of both classes is true? al They should be declared virtual u Declaring them virtual or not does not make any difference c) They should be implemented as friend functions d) The destructor of HourlyWorker must be virtual whereas the destructor of Employee should 3. If a base class has a non-virtual member function called...
please write in c++.
4 Derived class JPG 4.1 Class declaration • The class JPG inherits from File and is a non-abstract class. 1. Hence objects of the class JPG can be instantiated. 2. To do so, we must override the pure virtual function clone() in the base class. • The class declaration is given below. class JPG : public File { public: JPG(const std::string& n, int n, int w, const double rgb()) : File(...) { // ... } *JPG()...
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