#include<iostream>
//Implement a circle class. Each object of this class will represent a circle accepting its radius value as float . Include an area() function which will calculate the area of circle
#include<bits/stdc++.h>
using namespace st
int main(){
float r,a;
const float pi = 3.1
cout<<"enter the radius";
cin>>
a = pi * pow(r,2);
cout<<"The area of the circle is ="<<
return 0;
}
// object oriented method
#include<iostream>
using namespace std;
class Test {
public:
float r, area;
void input() {
cout << "Enter radius of a circle:";
cin >> r;
}
void findArea() {
area = 3.14 * r * r;
}
void display() {
cout << "Area of circle is:" << area;
}
};
int main() {
Test obj;
obj.input();
obj.findArea();
obj.display();
return 0;
}
