5- When de we need to use private keyword in C++ class? 6- A derived class can be a base class for other classes. (True or False) 7- Return by value is better than return by reference (True, False or it depends on the case) 8- Is it possible to alter the address that the reference points to? (Yes or No) 9- We can write as many copy constructor in a C++ class as we want. (True or False)
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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:
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- Hello. I'm trying to make a C++ program practices with classes and OOP with dates, using three files: main.cpp, Date.cpp, and Date.h. I'm getting errors in main.pp for undefined references and in Date.cpp. there is alse an error for undefined reference Requirements Date.h will contain the class declaration. The following is required in the class declaration: The private attributes are the month, day, and year. The public member functions are PrintDate, SetDate, and NextDate The default constructor should initialize all data to the value 0. NextDate should still return a new Date object with the next day's information. This function needs to be completed (For this, just assume Feb has 29 days all the time even though it is not true.) Date.cpp will contain the implementation of all member functions and the constructor main.cpp* will need to be updated to use the member functions. Example: SetDate(today,2,13,2016); // today.month = 2; // today.day = 13; //…PLEASE HELP: In c++ please The class function needs to be in a header file (.h) The main needs to be on the main .cpp file. Please try to avoid using -> operators. Looking for a solution without them. Any help is very much appreciated. Much thanks! Create a class AccessPoint with the following attributes: x - a double representing the x coordinate y - a double representing the y coordinate range - an integer representing the coverage radius status - On or Off Add constructors. The default constructor should create an access point object at position (0.0, 0.0), coverage radius 0, and Off. Add accessor and mutator functions: getX, getY, getRange, getStatus, setX, setY, setRange and setStatus. Also, add a set function that sets the location coordinates and the range. Add the following member functions: move and coverageArea. Add a function overlap that checks if two access points overlap their coverage and returns true if they overlap. Add a function signalStrength that returns the…Need code in C++. I have answer till part 7,please go through the code and correct it if you find any mistakes. If not answer the last 4 parts(8,9,10,11) Create a class called Line with the followings:1. Private members: p1 and p2 as pointer to Point objects (code provided below), slope and length as double variables2. Define setter and getter functions.3. Define a default constructor that allocate dynamic memory for points andset everything to 0.4. Overload a constructor that allocates memory for points, initilize themwith given arguments, and calculate the slope and length.5. Overload a destructor, a copy constructor and a copy assignment operator.6. Create a function called ”parallel” that return true when given lines areparallel and returns false otherwise7. Overload the less than (<) and greater than (>) and equality (==) oper-ators (compare the length)8. Write a functions that reads lines in the format provided in the lines.txtfrom the file and stores them in a vector named…
- Please code in C++ and U can take time for this one and please follows all the instruction. Thank you so much. A. Create an abstract base class called Currency with two integer attributes, both of which are non-public (Python programmers - it is understood that there is nothing private in Python but try to not access the attributes directly from outside the classes). The int attributes will represent whole part (or currency note value) and fractional part (or currency coin value) such that 100 fractional parts equals 1 whole part. B. Create two derived classes - Dollar and Pound - with one additional non-public string attribute which will contain the name of the currency (Dollar or Pound) respectively. DO NOT add this attribute to the base Currency class. C. In your base Currency class, add public methods for the following, where appropriate (C++ students are allowed to use friend methods as long as a corresponding class method is defined as well): Default Construction (i.e. no…Can you please help me write this in C++ with this implemented with in it Excutes without crashing Appropriate Internal Documentation Doctor class created Doctor.h Doctor.cpp Contains data for no more than 3 patients Patient class created Patient.h Patient.cpp Contains data for up to 5 cholesterol readings Menu Add: Successfully adds a patient record Successfully adds cholesterol readings List: Lists all the data Quit: Quits Loops until the user selects quit Style: Data members are correctly declared Member functions exist in the correct classes Overall style is appropriate (no globals unless constants, modularity, uses a vector, adheres to the principle of least privilege, etc.) Appropriate formatting of outputReuse your Car class . In a main, build an object of that class, and print out the object using System.out.println(). Notice that this simply reports the memory address of the object in question, and we’d like to do something more useful. To replace (or override) the toString (or equals) function. Now, build a toString function that prints out the make, model, and odometer reading for a vehicle object. public class Car { //instance variables private int odometer; private String make; private String model; //overloading //constructors public Car(int odometer,String make, String model) { this.odometer = odometer; this.make = make; this.model = model; } public Car(String make, String model) { this.make = make; this.model = model; } public Car(String make) { this.make = make; } /* *getter & setter methods */ public int getOdometer() { return odometer; } public void…
- Create a class called Complexno for performing arithmetic with complex numbers in C++. The definition of the class is split into two files. complexno.h : Contains the declaration of the Complex class, you need to add some methods as asked below. complexno.cpp : Contains definitions of the functions belonging to class Complexno, you need to finish all the definitions of the class members. The ADT class uses double variables to represent the private data of the class—the real component and the complex component of a complex number. provides constructors that enable an object of this class to be initialized when it is declared. The constructor should contain default values in case no initializers are provided. provides public member functions for each of the following: Addition of two complex numbers. See the solution as an example below. Subtraction of two complex numbers. Multiplication of two complex numbers. Negation of a complex number. Computes and returns the magnitude of a…Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…can someone help me with this problem in C++ In this exercise, you will work with 3 classes: Shape, Triangle and Rectangle. The first class is the class Shape. The Shape class has two float type properties: center_x and center_y. The Shape class also has the following methods: a constructor Shape(), that will set center_x and center_y to zero. set/get functions for the two attributes 1) You need to implement two additional functions for Shape: setCenter(float x, float y), that will set the new center and print: Figure moved to [<center_x>, <center_y>] draw(), that will print: Drawing Figure at [<center_x>, <center_y>] 2) You will have to implement another class, called Triangle, which inherits from the Shape class. The Triangle class has one int attribute: side. The Triangle class has the following methods: a constructor that will receive one int parameters (side) set/get for its attribute setCenter(float x, float y), that will set the new center and…
- This is my code in c++. When the chosen class is full I want the code to automatically assign it to the next available class (Economy). Also when the economy class is full I want the code to automatically assign it to the next available First Class seat. #include <iostream> using namespace std; void ShowInfo(); void printInfo(char input[9][4]); void DesiredRow(int row[2], char seat); int main () { int ROW = 9, SEATS = 4; int row[9]; char airchar[9][4]; char seat; string answer; string ticket; string name; string newanswer; for (int i = 0; i < ROW; i++) { for (int j = 0; j < SEATS; j++) { airchar[i][j] = '*'; } } cout << "Please enter your full name: " << endl; getline(cin, name); while ("Yes") { cout << " Do you wish to book a seat: " << endl; cout << " Yes or No: " << endl; cin >> answer;…Hello please solve the below in C++. I used the code provide by a Bartleby expert and I was marked down, the feedback was “it doesn't overload the operators as it should” Question Create a class called Rational (separate the files as shown in the chapter) for performing arithmetic with fractions. Write a program to test your class. Use integer variables to represent the private data of the class-the numerator and the denominator. 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 and should store the fraction in reduced form. For example, the fraction 2/4 would be stored in the object as 1 in the numerator and 2 in the denominator. Provide public member functions that perform each of the following tasks: Make an overloaded operator of the + symbol for the add method - Adds two Rational numbers. The result should be stored in reduced form. Make an overloaded…Please circle True or False for each of the following statements. C++ Keywords public and private are access specifiers for classes in C++. TRUE FALSE