1. Fill in the blanks in each of the following statements: a) If a class contains at least one abstract method, it’s a(n) ____________class. b) Classes from which objects can be instantiated are called ____________ classes. c) ___________ involves using a superclass variable to invoke methods on superclass and sub-class objects, enabling you to “program in the general.” d) Methods that are not interface methods and that do not provide implementations must be declared using keyword ______________.

1. Fill in the blanks in each of the following statements: a) If a class contains at least one abstract method, it’s a(n) ______class. b) Classes from which objects can be instantiated are called classes. c) _ involves using a superclass variable to invoke methods on superclass and sub-class objects, enabling you to “program in the general.” d) Methods that are not interface methods and that do not provide implementations must be declared using keyword __________.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter11: Inheritance And Composition

Section: Chapter Questions

Problem 24SA

See similar textbooks

Similar questions

Q2 Your code must ensure that all the relevant classes Seller, Dealer, Buyer, and distinct classes Animal and Invoice implement a common method for maintaining the finances. Details of the classes can be seen in Table 1. Explain with proper syntax as to how this can be achieved using object-oriented programming, highlighting the changes you will need to make in the class declarations in Question 1 Q1 code is down below package com.company.sale;public class Animal {int tag;double price,weight,serviceCharge;String color,date;Boolean sold;public static void main(String[] args) {Animal Cow=new Animal();}}class Dealer extends Animal{String dname,address;double commission,earning;long pno,id;void earning(){return earning;}}class Seller{String name,address;long id;double profitRate,salesTax,profit;void SalesTaxProfit(){return profit*salesTax/100;}}class Buyer{String name,address;long id,contact;double amt;void amt(){return amt;}}
1- Create a class SchoolKid that is the base class for children ar aschool . It should have attributes of the child’s name and age ,the name of the child’s teacher ,and the greeting. It should haveappropriate accessor and mutator methods for each of the attributes. Derive a class ExaggeratingKid from schoolkid , as described above . The new class should override the accessor method for the age , reporting the actual plus 2. It also should override the accessor for the greeting ,returning the child’s greeting concatenated with the words “I am the best”.
Task 3 question: Write code in Java with all these classes implementation and a program called Polymorphism_works with member method specific_Item which takes one instance of Item_in_Stock class as a parameter. Perform functionality of adding items, selling items and changing item price and displaying items details against specific item instance. There should be a main () method which declares an array of objects containing instance of sub classes of Item_in_Stock class and then calls methods of each of the implemented classes. More info: In this last and final part of the course work you are required to change the definition of the Item_in_Stock class to make it an abstract class and change the getItemCat(), getItemName() and getItemDescription() definitions to make them abstract methods. You are then required to design and implement three classes which are derived from Item_in_Stock class to fully demonstrate the concept of inheritance and polymorphism. Implementation of HP_Laptop…
CPP OOP - Create two classes named Mammals and MarineAnimals. Create another class named BlueWhalewhich inherits both the above classes. Now, create a function in each of these classes which prints"I am mammal", "I am a marine animal" and "I belong to both the categories: Mammals as well asMarine Animals" respectively. Now, create an object for each of the above class and try callingfunction of Mammals by the object of Mammalfunction of BlueWhale by the object of BlueWhalefunction of each of its parent by the object of BlueWhalefunction of MarineAnimal by the object of MarineAnimal
Q1: Create two classes named Mammals and SeaAnimal. Create another class named Whale whichinherits both the above classes. Now, create a function in each of these classes which prints "I ammammal" in class Mammals, "I am a marine animal” in class Marine and "I belong to both thecategories: Mammals as well as Marine Animals" in class Whale. Now, create an object for each of theabove class in main function and try calling.1 - function of Mammals by the object of Mammal2 - function of SeaAnimal by the object of SeaAnimal3 - function of Whale by the object of Whale4 - function of each of its parent by the object of Whale
1- Create a class Rational for performing arithmetic with fractions.Write a driver program to test the class. Provide a constructor thatenables an object of this class to be initialized when it isinstantiated. The constructor should contain default values in caseno initializes are provided and should store the fraction in reducedform. Provide a private function to reduce numbers.Provide Public member functions for each of the followingarithmatic’s functions (addition – subtraction – multiplication –division), printing in the form a/b, printing in floating point formatand final overload the == and != operators to allow comparisons oftwo fraction numbers.Include any additional operations that you think would be useful fora rational number class.Design, implement, and test your class.
Examine the following code and select the correct statements (choose all possibleoptions): class Bottle {Bottle() {}Bottle(WaterBottle w) {}}class WaterBottle extends Bottle {WaterBottle() { }WaterBottle(Bottle w) { } } a) The class Bottle defines two overloaded constructors.b) The class WaterBottle defines two overloaded constructors.c) The class compiles successfully—a base class can use reference variables of its derived class as method parameters.d) Bottle and WaterBottle cause syntax errors.e) The class compiles successfully - A derived class can use reference variables of its base class as method parameters.f) A base class can’t pass reference variables of its defined class, as method parameters in constructors.
2) Create a class called Complex for performing arithmetic with complex numbers. Write a program to test your class. Complex numbers have the form realPart + imaginaryPart * i Use double variables to represent the private data of the class. Provide a constructor that enables an object of this class to be initialized when it’s declared. The constructor should contain default values in case no initializers are provided. Provide public member functions that perform the following tasks: a) Adding two Complex numbers: The real parts are added together and the imaginary parts are added together. b) Subtracting two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is subtracted from the imaginary part of the left operand. c) Printing Complex numbers in the form (a, b), where a is the real part and b is the imaginary part. Design: Code: Output:
Long answer Type question. A) Explain the type of inheritance with code.B) Create two classes named Mammals and MarineAnimals. Create another class named BlueWhale which inherits both the above classes. Now, create a function in each of these classes which prints "I am mammal", "I am a marine animal" and "I belong to both the categories: Mammals as well as Marine Animals" respectively. Now, create an object for each of the above class and try callingfunction of Mammals by the object of Mammalfunction of BlueWhale by the object of BlueWhalefunction of each of its parent by the object of BlueWhalefunction of MarineAnimal by the object of MarineAnimal
Use the following partial class definitions to answer the questions a-c public class A1 { public int x; private int y; protected int z; ... } public class A2 extends A1 { protected int a; private int b; ... } public class A3 extends A2 { private int q; ... } a) Which of the following is true with respect to A1, A2 and A3? Group of answer choices A1 is a subclass of A2 and A2 is a subclass of A3 A3 is a subclass of A2 and A2 is a subclass of A1 A1 and A2 are both subclasses of A3 A2 and A3 are both subclasses of A1 A1, A2 and A3 are all…
Part II: Define a class Money with proper constructors, accessors, mutators, and other member functions The class will be storing money information using coins values only The class should have following data members (Quarter, Dime, Nickel, Penny) Write A function to print out the object money info expressed in dollars and Cents only Overload the + operator, so that adding two objects of this class works Example: if you have following money objects $2.99 could be constructed based on available coins Money. m1(11,1,2,4) m1could also expressed as Money m2(10,4,1,4) (m1 + m2).print(); should display $4.98 Overload the + operator, so that adding two objects of this class works Class money { Public: money(); money( int, int, int, int); void printMoney(); money operator+( money m) { // add addition } // accessors int getquarter(); int getdime (); int getnickel(); int getpenny(); // mutators Vopid setquarter(); Void setdime (); Void setnickel();…
Using classes, design an online address book to keep track of the names, addresses, phone numbers, and dates of birth of family members, close friends, and certain business associates. Your program should be able to handle a maximum of 500 entries. Define a class addressType that can store a street address, city, state, and ZIP code. Use the appropriate functions to print and store the address. Also, use constructors to automatically initialize the member variables. Define a class extPersonType using the class personType (as defined in Example 10-10, Chapter 10), the class dateType (as designed in this chapters Programming Exercise 2), and the class addressType. Add a member variable to this class to classify the person as a family member, friend, or business associate. Also, add a member variable to store the phone number. Add (or override) the functions to print and store the appropriate information. Use constructors to automatically initialize the member variables. Define the class addressBookType using the previously defined classes. An object of the type addressBookType should be able to process a maximum of 500 entries. The program should perform the following operations: Load the data into the address book from a disk. Sort the address book by last name. Search for a person by last name. Print the address, phone number, and date of birth (if it exists) of a given person. Print the names of the people whose birthdays are in a given month. Print the names of all the people between two last names. Depending on the users request, print the names of all family members, friends, or business associates.