consider the following code snippet: class A{ public: A0{ class B: private A{ B); }; main0{ B *b = new B0; O a. the constructor of the class B will be executed then the constructor of class A O b. None of the constructors will be executed O c. the constructor of the class A will be executed then the constructor of class B O d. All other answers are wrong

consider the following code snippet: class A{ public: A0{ class B: private A{ B); }; main0{ B *b = new B0; O a. the constructor of the class B will be executed then the constructor of class A O b. None of the constructors will be executed O c. the constructor of the class A will be executed then the constructor of class B O d. All other answers are wrong

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter11: More Object-oriented Programming Concepts

Section: Chapter Questions

Problem 2RQ

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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.
a.) Write the definition of the default constructor of YClass so that the instance variables of YClasa are initialized to 0. b.) Write the definition of the default constructor of XClass so that the instance variable of XClass are initialized to 0. c.) Write the definition of the method two of YClass so that rhe 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.
a c++ program in which class A is base class for class B. While Class C is derived from class B and class D is derived from class E. Provide explicit implementation of default constructors and destructors. Write a test program which initializes each class object and shows execution order of constructor and destructor by printing appropriate messages. Modify the above classes and provide overloaded constructor implementation for each class. (Note: Use base initialize for this purpose) Note: Solve as soon as possible use oop concepts
In Java, Write a line of code that performs each of the following tasks : (a) Call superclass Employee's toString method from subclass Pieceworker's toString method. (b)Specify that class Pieceworker inherits from class Employee. (c) Call superclass Employee's constructor from subclass Pieceworker's constructor - assume that the superclass constructor receives three strings representing the first name, last name and social security number.
Given the following Imagine that is attached, select that all apply A. If the Other class extends the Base class then the method guessNumber() in Other overloads the method guessNumber in Base B. If the Other class extends the Base class then the method guessNumber() in Other overrides the method guessNumber in Base C. If the Base class implements MyInterface then it must implement the guessName method or declare it abstract. D. If the Base class implements MyInterface, then every class that extends the Base class also implements MyInterface. E. If the Other class extends the Base class, and implements MyInterface then the Base class also implements MyInterface F. MyInterface can have private methods specified.
If class A is a subclass of class B, then A has access to all of B's instance variables, including private ones. True False
You are given the following class and the client class. Examine the code and provide the output of the client class. Explain the intention of the code and comment if the code output matches the intended use of the code. Explain any mismatch between intention and actual code output. Find the problem in this code and explain what you would do to solve the problem. The Person class is shown in the UML class diagram as follows. System.out.println("Name: System.out.println("Age: System.out.println("Weight: " + weight + " kg"); " + name);" + age + " years"); Person - name: String + setName(String newname): void+ getName( ): String+ writeOutput ( ): void+ equals (Person otherPerson): boolean /** This is the class that can be used for the client class */ public class Twin { private Person first, second; public Twin(Person firstPerson, Person secondPerson) {first = firstPerson; second = secondPerson; } public Person getFirst() { return first; } public…
Consider the definition of the following class: (1, 2, 3, 5, 7) a. Give the line number containing the constructor that is executed in each of the following declarations. b. Write the definition of the constructor in Line 4 so that the instance variables are initialized to " ", " ", " ", 0, 0.0, and 0.0, respectively. c Write the definition of the constructor in Line 5 so that the string instance variables are initialized to"", and the other instance variables are initialized according to the parameters. Instance variables quantitieslnStock, price, and discount must be nonnegative. d. Write the definition of the constructor in Line 6 so that the instance variables productName and manufacturer are initialized to the empty string, instance variable id is initialized according to the first parameter, and the remaining instance variables are initialized according to the last three parameters. Instance variables quantitieslnStock, price, and discount must be nonnegative. e. Write the definition of the constructor in Line 7 so that the instance variables are initialized according to the parameters. Instance variables quantitieslnStock, price, and discount must be nonnegative.
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)
Question :- Add a statement to the classA to test whether myChar is accessible. public class ClassB { public int x = 1; int y = 2; private int z =3; } public class ClassA { public static void main(String[] args) { ClassB cb = new ClassB(); // System.out.print(cb.x); /* 1 */ // System.out.print(cb.y); /* 2 */ // System.out.print(cb.z); /* 3 */ } }
using c++ : Write a class father (name) with default constructor that prints the statement” default fatherconst.”And a constructor with parameter (name) that prints the statement (“my name is “<<name)Write a class son that inherited from the class father with the default constructor that printsthe statement “son def. const” and constructor with parameter that calls the constructor withparameter of the father class and prints (“the son name is “ <<name)37Write a class daughter that inherited from father with the default constructor that prints(“daughter def. constr.”) and a constructor with parameter that prints (“dauter name is“<<name)Write the destructor for each class as follows:Father destructor prints “father dead” and son prints “son dead” and daughter prints“daughter dead”In the main function create different objects in different scopes, pass some objects to externalfunction, create array of objects, create dynamic memory allocation of object and free themusing…
public class Father { public String name; public int age; // customer name Father(){ name=”Hassan”; age=50;} public void display(){ System.out.println(“Name:”+name); System.out.println(“Age:”+age); } } 1. Based on Figure 3, create a class named Child that inherits the Father class. Declare an instance name location (String) for class Child. 2. Define a constructor in class Child and give an appropriate initial values for the instance (name, age, location). 3. Define a method display () in class Child, execute the display ( ) method in superclass using the keyword super. Method display ( ) in class Child should print the information of name, age and location 4. Create other class named Main for the main method and create 2 objects for the 2 classes (Father and Child). Then execute the display ( ) method for Father and Child. Example of the output as in Figure 4: Father's info: Name: Josh Age: 50 Child's info: Name: Christy Age: 20 Location:…