friendfun.cpp

#include <iostream>
using namespace std;

class Box {
    int length, width, height;

public:
    Box() {
        cout << "Enter length, width, and height of the box: ";
        cin >> length >> width >> height;
    }

    // Declare a friend function
    friend void showVolume(Box b);

    ~Box() {
        cout << "Box object destroyed." << endl;
    }
};

// Friend function defined outside the class
inline void showVolume(Box b) {
    int volume = b.length * b.width * b.height;
    cout << "Volume of the box is: " << volume << endl;
}

int main() {
    int n;
    cout << "Enter number of boxes: ";
    cin >> n;

    Box* boxes = new Box[n]; // Allocate array of Box objects dynamically

    for (int i = 0; i < n; i++) {
        cout << "Box " << i + 1 << ": ";
        showVolume(boxes[i]); // Call friend function
    }

    delete[] boxes; // Free memory
    return 0;
}