Given class A and class B defined below, what is the type of method C() in class B as discussed in the course? 1 class A{ 2 public: 3 virtual void C(std::string a){ std::cout << "A" << std:: endl; } 4 }; 5 class B public A{ 6 public: 7 void C(std::string a, int n){std::cout << a << std::en dl; } 8 }; an inherited function an overridden function an overloaded function a redefined function

Given class A and class B defined below, what is the type of method C() in class B as discussed in the course? 1 class A{ 2 public: 3 virtual void C(std::string a){ std::cout << "A" << std:: endl; } 4 }; 5 class B public A{ 6 public: 7 void C(std::string a, int n){std::cout << a << std::en dl; } 8 }; an inherited function an overridden function an overloaded function a redefined function

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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2. Consider the following class, which represents a price in dollars and cents: class Price { private: int dollars; int cents; public: Price() { dollars = cents = 0; } Price(int d, int c) { dollars = d; cents = c; } Price operator+(Price&); void printer(); }; Implement the overloaded + operator to compute the sum of two Price objects, and return the result as a Price object containing the sum. You may assume that all price objects contain valid data, i.e. dollars>=0 and 0<=cents<=99.
#include <iostream> using namespace std; class A { private: int x; public: A(int _x) { x = _x; } int get() { return x; } }; class B { static A a; public: static int get() { return a.get(); } }; int main(void) { B b; cout << b.get(); return 0; } Excecute and provide the screenshot.
6. Given: class Pet { public: virtual void eat() { cout eat(); } What is the result of compiling and running the above program? m. The program compiles and crashes when it runs. i. The program compiles and runs, printing "Pet::eat" j. The program compiles and runs, printing "Cat::eat" The program compiles and runs to completion without printing anything. n. o. None of the above. k. The program fails to compile because the method eat is not marked virtual in Cat. I. The program fails to compile for some other reason.
use the following partial class definitions:public class A1{public int x;private int y;public int z;…}public class A2 extends A1{public int a;private int b; …}public class A3 extends A2{private int q;…} 2) Which of the following lists of instance data are accessible in class A2?a) x, y, z, a, bb) x, y, z, ac) x, z, a, bd) z, a, be) a, b
Write a Fraction class whose objects will represent fractions. #include <iostream> using namespace std; class Fraction { public: int numerator; int denominator; void set(int n ,int d); void print(); Fraction multipliedBy(Fraction f); Fraction dividedBy(Fraction f); Fraction addedTo(Fraction f); Fraction subtract(Fraction f); bool isEqualTo(Fraction f); }; void Fraction::set(int n, int d) { numerator = n; denominator = d; } void Fraction::print() { cout << numerator << "/" << denominator; } Fraction Fraction::multipliedBy(Fraction f) { Fraction results; results.numerator = (this->numerator *f.denominator); results.denominator=this->denominator * f.numerator; return results; } Fraction Fraction::dividedBy(Fraction f) { Fraction results; results.numerator =(this->numerator * f.denominator); results.denominator=this->denominator * f.numerator; return results; } Fraction Fraction::addedTo(Fraction f) { Fraction results; results.numerator…
Consider the following class declarations in C++:class C {protected: int x;public: void f(){...};};class C1: public C {protected: int x1;public: void h(C *obj){...};};class C2: public C1 {public: int x2;};class C3: public C {public: f(){...};};i. Draw the class hierarchyii. Assume that main contains the following declaration:C1 obj1;For each of the following expressions, say whether it is allowed in the code of main or not (they can be forbidden either because they violate the classdefinition or the protection mechanism)obj1.x , obj1.f() , obj1.x1 , obj1.x2iii. Assume that the body ofC1::h contains the following declarationsC2 *obj2;C3 *obj3;For each of the following expressions, say whether it is allowed in the bodyofC1::hor notobj->x , obj2->x , obj3->xiv. Assume that the body ofC1::h contains the following statementobj->f();Assume that we call C1::h with a parameter (pointing to an object) of classAnd what would be the method executed if f were declared virtual in C?
A programmer has submitted the following class declaration for approval. This will be part of a program that tracks departments within a company and employees assigned to those departments. class Employee { public: Employee(); string getName(); long getldentifier(); Dollars getSalary(): Department worksln(): void assignTo (Department"); Employee getSupervisor() (return dept->getManager();) private: string name; long identifier; Department" dept; Dollars salary: Based upon this information, which of the C++ checklist items appear to be in violation? O Interface completeness O Meaningful names O Undocumented pre-conditions O All data members private O Every constructor initializes every data member O Appropriate treatment of default constructor O Appropriate treatment of the Big 3 O Appropriate relational operators O Appropriate output function D Const correctness
class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };
Can help with this in c++The base class is given Base: class Base { int a;double b;public:Base (int _a, double _b) : a(1), b(2.5) {}Base (int _a, double _b) :a(_a), b (_b) {}double calct () {return 1.5*a+2*b;}string toString(){return "a="+to_string(a) + "b=" + to_string(b);}};Define a class Derived, successor to Base, with an additional field d of type double. For Derived, write constructors, write a new implementation of the calc () method to add to the sum and field d with coefficient 3 and the toString () method, which returns the text description of an object of class Derived.Create objects of class Derived with the written constructors and call the two variants of the methods calc () and toString () (of the class Derived and its base class Base)