Question

(10 points Circle has one default constructor without parameters and one constructor initializer. Override method area of class Shape as well as well as print(). Include a copy constructor in the class Circle. Include one get method. (10 points

Answer 1

#include<iostream>
using namespace std;
class Shape//Parent class of Circle class
{
public:

   
    double area() {
      
    }
void print() {}

};

class Circle : public Shape//This class inherits the Shape Class
{
private:
    double radius;
public:
Circle()//Default constructor without parameter
{}
    Circle(double r)//Normal Parameterized constructor
    {
        radius = r;
        }

    // Copy constructor
    Circle(const Circle &r2)
    {
        radius = r2.radius;
        }

    double get()         
{
return radius;
}
    double area()//this function compute and return the area of circle
{
return 3.14*radius*radius;

}
void print()//this function print the area of circle
{
cout<<endl;
cout<<"Area Of Circle: "<<area();
}
};

int main()
{
    Circle r1(10.5); // Normal constructor is called here
    Circle r2 = r1; // Copy constructor is called here
    r1.print();//printing the value without the usage of copy constructor
    r2.print();//printing the value by use of copy constructor
   return 0;
}

Output:

Area Of Circle: 346.185
Area Of Circle: 346.185