define an object of this class?
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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:
Given a class definition, which one correctly define an object of this class?
class Holiday
{
public:
int year;
int month;
int day;
};
a. holiday h;
b. Holiday year;
c. Class month;
d. Date d;
2. Given the same class as in question 1, after defining an object h1, which one correctly use the part of the class?
a. h1->year = 2020;
b. h1.year = 2020;
c. h2.year = 2020;
d. (*h1).year = 2020;
3. Given the same class as in question 1, after defining an array object h[100] of the class, which one correctly access and write the value for the 10th element in the array?
a. h[10].year =2020;
b. h[10]->year = 2020;
c. h[9]-> year = 2020;
d. h[9].year = 2022;
C++
Step by step
Solved in 3 steps
- Mark the following statements as true or false. The member variables of a class must be of the same type. (1) The member functions of a class must be public. (2) A class can have more than one constructor. (5) A class can have more than one destructor. (5) Both constructors and destructors can have parameters. (5)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…How many default constructors can a class have? a. A class cannot have a default constructor. b. only one c. as many as it needs d. one or more, but fewer than three
- Define a class named Doctor whose objects are records for a clinic’s doctors. Derive this class from the class Person given in Listing 8.1. A Doctor record has the doctor’s name—defined in the class Person—a specialty as a string (for example Pediatrician, Obstetrician, General Practitioner, and so on), and an office-visit fee (use the type double). Give your class a reasonable complement of constructors and accessor methods, and an equals method as well. Write a driver program to test all yourmethods.Analysis the following class definition and answer the following question. class Student{ private int id, age; protected float mark; int getAge (int a){ return a ; } protected void setMark (float m){ mark = m; } float result(){ return mark / 2; } } Which is the member variable of the class? a. setMark b. getAge c. result d. private e. ageGiven the following code for a class named Employee, complete the following constructor public class Employee ( private int employeeID; private int SSN; public Emplyee(int employeeID, int SSN) {
- Q2: Consider the following statements: public class YClass { private int a; private int b; public void one() { } public void two(int x, int y); { } public YClass() { } } class XClass extends YClass { private int z; public void one() { } public XClass() { } } YClass yObject; XClass xObject; Write the definition of the default constructor of YClass so that the instance variables of YClass are initialized to 0. Write the definition of the default constructor of XClass so that the instance variables of XClass are initialized to 0. Write the definition of the method two of YClass so that the instance variable a is initialized to the value of the first parameter of two and the instance variable b is initialized to the value of the second parameter of two. please I want solution :(A class Person is given below as your base class. Your task is to create a class Employee which will contain objects of records for an employee and derived from the class Person. Guideline for an employee record: employee's name (which is inherited from the class Person) annual salary represented (type double) year the employee started work (type int) company ID number (type String) with a format of EMPXXX (where X are numbers) Create constructors and accessor methods which you think are needed for this program, as well as another method (print) to print out all the employee’s data once you call that method. Finally, create your TestEmployee class which will contain a main method to fully test your class definition. public class Person{ private String name; public Person(){ name = "No name yet."; } public Person(String n){ name = n; } public void setName(String newName){ name = newName; } public String getName(){ return name; } public void print(){…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;}}
- Consider the following declarations: class xClass{public:void func();void print() const ; xClass ();xClass (int, double); private:int u;double w;};Sample Output: Program 2 and assume that the following statement is in a user program: xClass x;a. How many constructors does class xClass have?b. Write the definition of the default constructor of the class xClass so that the private member variables are initialized to 0.c. Write the definition of the constructor of the class xClass so that the private member variables u and w are initialized to the values passed in the functions.Analysis the following class definition and answer the following question. class Student{ private int id, age; protected float mark; int getAge (int a){ return a ; } protected void setMark (float m){ mark = m; } float result(){ return mark / 2; } } What is the access specifier of the result in the above code? a. No access specifier b. private c. float d. public e. voidB)Create a class named 'Member' having the following members: Data members 1 - Name 2 - Age 3 - Phone number 4 - Address 5 - Salary It also has a method named 'printSalary' which prints the salary of the members. Two classes 'Employee' and 'Manager' inherits the 'Member' class. The 'Employee' and 'Manager' classes have data members 'specialization' and 'department' respectively. Now, assign name, age, phone number, address and salary to an employee and a manager by making an object of both of these classes and print the same.