1. How does polymorphism contribute to the design of object-oriented systems? 2. Explain the role of...
1. How does polymorphism contribute to the design of object-oriented systems?
2. Explain the role of the vptr and vtable in the implementation of virtual functions.
3. What is a pure virtual function and why would you ever use one?
4. What is the purpose of a virtual destructor?
5. Describe a situation where it makes sense for a class to have a destructor, but no constructor.
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1. How does polymorphism contribute to the design of
object-oriented systems?
2. Explain the role of...
What are constructors? Explain why they are needed in an object-oriented programming language. If inheritance takes...
What are constructors? Explain why they are needed in an object-oriented programming language. If inheritance takes place, what is the order in which the parent and child constructors are called? Can a constructor be overloaded? Can a constructor be overridden? Explain when a destructor should be declared as virtual in C+? Explain the use of the access specifiers public, protected and private in C++. Which is the default specifier?
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...
How do I format this into C++? This the prompt: Design a class named Password that...
How do I format this into C++? This the prompt: Design a class named Password that stores a password in a c-string and has member functions to test if the password complies with certain requirements as follows: The password should be between 6 and 20 characters long. The password should contain at least one uppercase and at least one lowercase letter. The password should have at least one digit. The password should have at least one punctuation character. Define a...
1.) Using a single sentence, explain the role of databases in organizations. Then explain your answer....
1.) Using a single sentence, explain the role of databases in organizations. Then explain your answer. 2.) Describe the DBA's responsibilities. 3.) Explain and contrast differences and similarities between DBA and DA. 4.) Describe and characterize the skills desired for a DBA. 5.) What are the DBA's managerial roles? Describe the managerial activities and services provided by the DBA 6.) What DBA activities support end users? 7.) Explain the DBA's managerial role in the definition and enforcement of policies, procedures,...
The purpose of this project is to give students more exposure to object oriented design and...
The purpose of this project is to give students more exposure to object oriented design and programming using classes and polymorphism in a realistic application that involves arrays of objects and sorting arrays containing objects A large veterinarian services many pets and their owners. As new pets are added to the population of pets being serviced, their information is entered into a flat text file. Each month the vet requests and updates listing of all pets sorted by their "outstanding...
Project 1 – Classes and Top-down Design Overview Software development projects using the object-oriented approach involve...
Project 1 – Classes and Top-down Design Overview Software development projects using the object-oriented approach involve breaking the problem down into multiple classes that can be tied together into a single solution. In this project, you are given the task of writing some classes that would work together for providing a solution to a problem involving some basic computations. Learning Objectives The focus of this assignment is on the following learning objectives: • Be able to identify the contents of...
OUTCOMES After you finish this assignment, you will be able to do the following: Define an...
OUTCOMES After you finish this assignment, you will be able to do the following: Define an abstract class Create concrete classes from an abstract class Overload an operator Split classes into .h and .cpp files Open files for reading Write to files Use output manipulators such as setw, fixed, and setprecision DESCRIPTION A binary arithmetic operation takes two double operands (left and right) to perform addition, subtraction, multiplication, or division on. For example, 10 + 11 is an addition (+)...
1.Suppose that the goop function from the previous question changes the value of z[1]. Does this...
1.Suppose that the goop function from the previous question changes the value of z[1]. Does this change effect the value of the actual argument? A. Yes B. No 2.Here is a function declaration: void goo(int* x) { *x = 1; } Suppose that a is an int* variable pointing to some integer, and *a is equal to zero. What is printed if you print *a after the function call goo(a)? A. 0 B. 1 C. address of a D. address...
Using an object-oriented approach, write a program to read a file containing movie data (Tile, Director,...
Using an object-oriented approach, write a program to read a file containing movie data (Tile, Director, Genre, Year Released, Running Time) into a vector of structures and perform the following operations: Search for a specific title Search for movies by a specific director Search for movies by a specific genre Search for movies released in a certain time period Search for movies within a range for running time Display the movies on the screen in a nice, easy to read...
What is the role of polymorphism? Question options: Polymorphism allows a programmer to manipulate objects that...
What is the role of polymorphism? Question options: Polymorphism allows a programmer to manipulate objects that share a set of tasks, even though the tasks are executed in different ways. Polymorphism allows a programmer to use a subclass object in place of a superclass object. Polymorphism allows a subclass to override a superclass method by providing a completely new implementation. Polymorphism allows a subclass to extend a superclass method by performing the superclass task plus some additional work. Assume that...
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...
The purpose of this project is to give students more exposure to object oriented design and programming using classes and polymorphism in a realistic application that involves arrays of objects and sorting arrays containing objects A large veterinarian services many pets and their owners. As new pets are added to the population of pets being serviced, their information is entered into a flat text file. Each month the vet requests and updates listing of all pets sorted by their "outstanding...
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