struct exc

#include <iostream>
#define pi 22/7
using namespace std;
struct circle {
private :
float diameter;
public :
    // constractor
    circle (float d) {
        diameter = d;
    }
    // class function
    void PrintInfo (){
        float ci = 2 * pi * diameter;
        float area = pi * diameter * diameter;
        cout << " circle diameter is : " << diameter <<" cm" << endl;
        cout << " circumference of a circle is :" << ci <<" cm" << endl;
        cout << " circle surface area is : " << area << " cm2" << endl;
    }
    // setter
    void setDiameter(float d) {
        diameter = d;
    }
    // getter
    float getDiameter() {
        return diameter;
    }
    float getCircumference() {
        return 2 * pi * diameter;
    }
    float getarea() {
        return pi * diameter * diameter;
    }
};

int main() {
    circle myCircle(14);
    myCircle.PrintInfo();
    cout <<"---------------------------------------\n";
    myCircle.setDiameter(16.25);
    cout << " circle diameter is : " << myCircle.getDiameter()<< " cm" << endl;
    cout << " circumference of a circle is :" << myCircle.getCircumference()<<" cm" << endl;
    cout << " circle surface area is : " << myCircle.getarea()<<" cm2" << endl;
    cin.get();
}