What is wrong with the following abstract class definition? class Shape { public: virtual...
What is wrong with the following abstract class
definition?
class Shape
{
public:
virtual double print()
const;
double area() const
{ return base *
height;
}
private:
float base;
float height;
}
Homework Answers
In an abstract class, we can't define the body of the function. The class inheriting the abstract class will override the function.
But, in the above class definition, the function area() has a body. So, the program will show error.
Add Answer to:
What is wrong with the following abstract class
definition?
class Shape
{
public:
virtual...
Pure Abstract Base Class Project. Define a class called BasicShape which will be a pure abstract class. The clas...
Pure Abstract Base Class Project. Define a class called BasicShape which will be a pure abstract class. The class will have one protected data member that will be a double called area. It will provide a function called getArea which should return the value of the data member area. It will also provide a function called calcArea which must be a pure virtual function. Define a class called Circle. It should be a derived class of the BasicShape class. This...
Write the definition of an abstract class shape that define two abstract methods and get Area()...
Write the definition of an abstract class shape that define two abstract methods and get Area() and getPerlmeter() returning, respectively the area and the perimeter of that shape. Then write the definition and implementation of a derived classes class shape: class Rectangle. Rectangle class defines two private side integer fields and it overrides methods getArea() and getPerimeter() of the shape class.
/* FILE: ./shapes7/shape.h */ #include <iostream> using std::ostream; class shape{ int x,y; public: shape( ) {...
/* FILE: ./shapes7/shape.h */
#include <iostream>
using std::ostream;
class shape{
int x,y;
public:
shape( )
{ x=y=0;}
shape(int xvalue, int yvalue);
void setShape(int new_x, int new_y);
void setX(int new_x);
void setY(int new_y);
int getX( ) const;
int getY( ) const;
virtual void move(int x, int y) = 0;
virtual void shift(int dx, int dy) = 0;
virtual void draw( ) = 0;
virtual void rotate(double r) = 0;
virtual void print(ostream&)const;
friend ostream & operator<<(ostream & os, const shape& s);...
Consider the following object-oriented code: abstract public class Number ( abstract public Number add(Number n); public...
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Language: C++ Create an abstract base class person. The person class must be an abstract base...
Language: C++
Create an abstract base class person.
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this is a jave program please help, I'm so lost import java.util.Scanner; public class TriangleArea {...
this is a jave program please help, I'm so lost import java.util.Scanner; public class TriangleArea { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); Triangle triangle1 = new Triangle(); Triangle triangle2 = new Triangle(); // Read and set base and height for triangle1 (use setBase() and setHeight()) // Read and set base and height for triangle2 (use setBase() and setHeight()) // Determine larger triangle (use getArea()) private int base; private int height; private...
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please write in c++.
4 Derived class JPG 4.1 Class declaration • The class JPG inherits from File and is a non-abstract class. 1. Hence objects of the class JPG can be instantiated. 2. To do so, we must override the pure virtual function clone() in the base class. • The class declaration is given below. class JPG : public File { public: JPG(const std::string& n, int n, int w, const double rgb()) : File(...) { // ... } *JPG()...
Create class definitions using the following: Classes: Circle, Cube, Shape, Sphere, Square, ThreeDimensionalShape, TwoDimensionalShape Functions: Draw,...
Create class definitions using the following: Classes: Circle, Cube, Shape, Sphere, Square, ThreeDimensionalShape, TwoDimensionalShape Functions: Draw, GetArea, GetDimensions, GetHeight, GetLength, GetSurfaceArea, GetVolume Members: height, length, width – all of type double Don’t actually write function implementations, just define the classes as you would in a header file. Use inheritance as appropriate. Use keywords such as “const” and “virtual” as appropriate. Make functions and members public, private, or protected as appropriate. Don’t forget constructors and destructors. Some classes may be abstract,...
Write the definition of an abstract class shape that define two abstract methods and get Area() and getPerlmeter() returning, respectively the area and the perimeter of that shape. Then write the definition and implementation of a derived classes class shape: class Rectangle. Rectangle class defines two private side integer fields and it overrides methods getArea() and getPerimeter() of the shape class.
/* FILE: ./shapes7/shape.h */
#include <iostream>
using std::ostream;
class shape{
int x,y;
public:
shape( )
{ x=y=0;}
shape(int xvalue, int yvalue);
void setShape(int new_x, int new_y);
void setX(int new_x);
void setY(int new_y);
int getX( ) const;
int getY( ) const;
virtual void move(int x, int y) = 0;
virtual void shift(int dx, int dy) = 0;
virtual void draw( ) = 0;
virtual void rotate(double r) = 0;
virtual void print(ostream&)const;
friend ostream & operator<<(ostream & os, const shape& s);...
Consider the following object-oriented code: abstract public class Number ( abstract public Number add(Number n); public class Complex extends Number [ public Complex(double r, double i) public Complex add(Number n) [ Complex that - (Complex) n; return new Complex(this.re+that.re, this.im+that.im); private double re; private double im; public class Real extends Number public Real(double v) val-v public Real add(Number n) Real that Rea) n; return new Real(this.val+that.val) private double val; Unsurprisingly, the following code compiles. Number n- new Complex(2,3).add(new Real(1)); What...
Language: C++
Create an abstract base class person.
The person class must be an abstract base class where the following functions are abstracted (to be implemented in Salesman and Warehouse): • set Position • get Position • get TotalSalary .printDetails The person class shall store the following data as either private or protected (i.e., not public; need to be accessible to the derived classes): . a person's name: std::string . a person's age: int . a person's height: float The...
please write in c++.
4 Derived class JPG 4.1 Class declaration • The class JPG inherits from File and is a non-abstract class. 1. Hence objects of the class JPG can be instantiated. 2. To do so, we must override the pure virtual function clone() in the base class. • The class declaration is given below. class JPG : public File { public: JPG(const std::string& n, int n, int w, const double rgb()) : File(...) { // ... } *JPG()...
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