objects_array

//objects.h

#ifndef OBJECTS_H
#define OBJECTS_H

class objects {
private:
    double data;                    // сами данные
    static objects* array[255];
    static int count;
public:
    objects(int data);
    ~objects();
    static int get_quantity();
    static objects* get_link(int i);
};
#endif // OBJECTS_H

//objects.cpp

#include "objects.h"
#include <iostream>

int objects::count = 0;
objects* objects::array[255];

objects::objects(int data) {
    array[count] = this;
    count++;
    this->data = data;
    std::cout << "Added new element with data = " << this->data << std::endl;
}

objects::~objects() {
    count--;
    std::cout << "Element has been deleted.\n";
}

int objects::get_quantity() {
    return count;
}

objects* objects::get_link(int i) {
    return array[i];
}


//main.cpp
#include <iostream>
#include <objects.h>

int main() {
    for(int i = 0; i < 8; i++)
        objects *temp = new objects(i*i);
    std::cout << "\nNumber of elements: " << objects::get_quantity()
              << "\nList of links to the registered objects:\n[ ";

    for(int i = 0; i < objects::get_quantity(); i++)
        std::cout << objects::get_link(i) << " ";
    std::cout << "]\n\n";

    for(int i = 0; i < 8; i++)
        delete objects::get_link(i);
    std::cout << "\nNumber of elements: " << objects::get_quantity() << ".\n";
    return 0;
}