More homework.

insieme.cpp

#include <iostream>
using namespace std;
class Insieme {
    private:
        int* pointers[10];
        int size;
    public:
        Insieme()
        {
            this->size = 0;
            for(int p = 0; p < 10; p++)
            {
                this->pointers[p] = 0;
            }
        }
        Insieme(const Insieme& copy)
        {
            this->size = copy.size;
            for(int p = 0; p < copy.size; p++)
            {
                this->pointers[p] = new int();
                *(this->pointers[p]) = *(copy.pointers[p]);
            }
        }
        ~Insieme()
        {
            for(int p = 0; p < this->size; p++)
            {
                delete pointers[p];
            }
        }
        bool operator +=(int n)
        {
            if(this->size >= 10)
            {
                return false;
            }
            this->pointers[size] = new int();
            *this->pointers[size] = n;
            this->size++;
            return true;
        }
        void del()
        {
            delete pointers[size];
            size--;
        }
        bool operator ==(Insieme a)
        {
            if(this->size != a.size)
            {
                return false;
            }
            for(int c = 0; c < this->size; c++)
            {
                if(*(this->pointers[c]) != *(a.pointers[c]))
                {
                    return false;
                }
            }
            return true;
        }
    friend ostream& operator<<(ostream& o, Insieme i);
};

ostream& operator<<(ostream& o, Insieme i)
{
    o << "[";
    for(int c = 0; c < i.size; c++)
    {
        o << *(i.pointers[c]);
        if(c < i.size-1)
        {
            o << ", ";
        }
    }
    o << "]";
}

main.cpp

#include <iostream>
#include "insieme.cpp"
using namespace std;
int main()
{
    Insieme a, b, c, d;
    a += 1;
    a += 2;
    a += 3;
    cout << a << '\n';
    b += 3;
    c += 3;
    b += 2;
    c += 2;
    b += 1;
    c += 1;
    cout << b << '\n' << c << '\n';
    cout << (b==c) << '\n' << (a==b) << '\n';
    d += 1;
    d += 2;
    d += 3;
    d += 999;
    d.del();
    cout << d << '\n';
}