Question

Write an Object Oriented Program in C++, to implement circle class to find area and circumference of a circle using functions void area(), void circum().

Answer 1

#include<iostream>

using namespace std;

class Circle 

{

public:

    float radius, area_of_circle,circumference;

    void getRadius() 

{

        cout << "Enter radius of a circle:";

        cin >> radius;

    }

    void area() 

{

        area_of_circle = 3.14 * radius * radius;

    }

    

    void circum()

    {

    circumference= 2 * 3.14 * radius;

}

void display() 

{

        cout << "Area of circle is:" << area_of_circle<<endl;

        cout << "Circumference of circle is:" << circumference;

    }

};

int main() {

    Circle cir;

    cir.getRadius();

    cir.area();

    cir.circum();

    cir.display();

    return 0;

}

Output::