#include <iostream>
using namespace std;

class MyClass {
public:
    friend ostream& operator<< (ostream&, const MyClass&);

    MyClass() : id(++count) {
        cout << "constructing MyClass #" << id << endl;
    }
    virtual ~MyClass() {
        cout << "destroying MyClass #" << id << endl;
    }
private:
    int id;
    static int count;
};

// notice how/where static data member is initialized:
int MyClass::count = 0;

ostream& operator<< (ostream &os, const MyClass &m) {
    return (os << "Hi. Iam MyClass #" << m.id);
}

int main() {
    MyClass *array = new MyClass[5];
    for (int i=0; i<5; i++)
        cout << array[i] << endl;
    delete [] array;
    return 0;
}