The __________ refers to the base class. a. friend keyword b. this keyword c. base keyword d. class keyword
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
The __________ refers to the base class.
a. friend keyword
b. this keyword
c. base keyword
d. class keyword
Step by step
Solved in 2 steps
- Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at store. An Invoice should include six data members- a) part number (type string) b) part description (type string) c) quantity of the item being purchased (type int) d) price per item (type int) e) value-added tax (VAT) rate as a decimal (type double) f) Discount rate as a decimal (type double). Your class should have a constructor that initializes the six data members. The constructor should initialize the first four data members with values from parameters and the last two data members to default values of 0.20 per cent and zero respectively. Provide a set and a get functions for each data member. In addition, provide a member function named getInvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by the price per item and applies the tax and discount amounts), then returns the amount. Have the set data members perform validity checks…Look at the following partial class definition, and then respond to the questions that follow it: public class Student { private String Name; private String ID; private String Email; } a. Write a constructor for this class. The constructor should accept an argument for each of the fields. b. Write a ‘sendEmail” method, that takes one argument of character type called Grade. This method should print output to screen as below replacing the variable with actual values: Dear ‘Name’, You have received grade ‘Grade’. This email is being sent to your email address at “Email”Create a base class called “Animal” which has two (2) class fields. The first field holds an integer “IDtag” for a number that a zoo uses to catalogue their animals and the second field holds a string called “species.”From the Animal class, derive two (2) classes. One is called “Bird” and the other “Reptile”. E.g. Species could be (for the Bird class) ostrich, dove, chicken etc. and (for the Reptile class) lizard, snake, bearded dragon etc.The Bird class has an additional class field called “colour” which holds the colour of the birds feathers (int – 1=grey, 2=white, 3=black). The reptile class has an additional class field called “bloodTemp” which hold the reptile’s temperature of their blood (double).You need to instantiate two (2) objects. The bird object will be called “brd” and the reptile object called “rept.”Input values for the bird’s IDtag, species and feather colour (int) and for the reptile’s IDtag number, species and bloodTemp. Override the Animal class’s input and output…
- You create a class by writing a(n) __________. a. blueprint b. class declaration c. initialization list d. object nameIn this exercise, you have to create a class called Point which can calculate distance between two points in the x-y plane. Problem Statement# You have to implement a class called Point that represents a specific point in the x-y plane. It should contain the following: ● fields: ○ x( integer type) ○ y( integer type) ● methods: ○ default constructor that initializes the point at (0,0)(0, 0)(0,0) ○ parameterized constructor that takes input x and y and initializes the point to the respective coordinates. ○ float distance(), a method which calculates the distance of the point (represented by the object) from the origin, i.e. (0,0)(0, 0)(0,0) ○ float distance(x1, y1), a method which calculates the distance between the point represented by the class object and (x1,y1)(x1, y1)(x1,y1) Sample Input# Point p1 = new Point(5, 5); Sample Output# distance() => 7.071 distance(2, 1) => 5.0 Part of the solution import java.lang.Math; class Point { // Private fields private int x;…Write Rectangle class to represent a rectangle. The class contains:a. Two double data fields named width and height that specify the width and height ofthe rectangle. The default values are 1 for both width and height.b. A no-arg constructor that creates a default rectangle.c. A constructor that creates a rectangle with the specified width and height.d. A method named getArea() that returns the area of this rectangle.e. A method named getPerimeter() that returns the perimeter.
- C- Create the sub class UsedBook that is derived from the super class Book and has the following instance variables, constructor, and functions: title ( String) isbn ( String) authors (String) publisher (String) edition ( int) published_year (int) price_new (double) // the price of the book if it is new age (int) // how old the book is in years Constructor that takes all of the above variables as input parameters. set/get functions calculate_price method // the price is calculated as price_new * (1- 0.10*age) print function that prints all information related to the old book. D- Create the Testing class that has the main method and does the following: aa- Use the constructor to create instance of NewBook class and name it as new. Call compute_price function. bb- Use the constructor to create instance of usedBook class and name it used. Call compute_price function. cc- Print the related information of new and used objects using print functions. Use this following code: class…C# (Odd or Even) Write an app that reads an integer, then determines and displays whether it’s odd or even. (Hints: use the remainder operator) (Multiples) Write an app that reads two integers, determines whether the first is a multiple of the second, and displays the result. (Hints: use the remainder operator). Create a class called Date that includes three pieces of information as auto-implemented properties: a month (type int), a day (type int), and a year (type int). Your class should have a constructor that initializes the three fields. Provide a method DisplayDate() that displays the three fields (separated by '/'). Write a test app named DateDemo that demonstrates class Date’s capabilities.iven a class named student, which of the following is a valid constructor declaration for the class? Student (student s) { } Void student ( ) { } Static void student(){ }. Student student ( ) { }
- Assume that you have created a class named MyClass. The header of the MyClass constructor can be ____________. public MyClass() public MyClass (double d) Either of these can be the constructor header. Neither of these can be the constructor header.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.#this is a python program #topic: OOP Design a class called Pokemon using a parameterized constructor so that after executing the following line of code the desired result shown in the output box will be printed. First object along with print has been done for you, you also need to create other objects and print accordingly to get the output correctly. [You are not allowed to change the code below] #Write your code for class here team_pika = Pokemon('pikachu', 'charmander', 90, 60, 10) print('=======Team 1=======') print('Pokemon 1:',team_pika.pokemon1_name, team_pika.pokemon1_power) print('Pokemon 2:',team_pika.pokemon2_name, team_pika.pokemon2_power) pika_combined_power = (team_pika.pokemon1_power + team_pika.pokemon2_power) * team_pika.damage_rate print('Combined Power:', pika_combined_power) #Write your code for subtask 2,3,4 here Output: =======Team 1======= Pokemon 1: pikachu 90 Pokemon 2: charmander 60 Combined Power: 1500 =======Team 2======= Pokemon 1:…