.h

#pragma once
#include <iostream>
class Matrica
{
    friend std::ostream &operator<<(std::ostream &, Matrica&);
    int n; //dimenzija kvadratne matrice
    struct Polinom
    {
        int degree;
        int *coffecients;
    };
    Polinom **arr;
public:
    Matrica(int);
    void add(int);
    ~Matrica();
};


.cpp

Matrica::Matrica(int numb)
{
    n=numb;
    arr = new Polinom*[n];
    for (int i = 0; i < n; i++)
        arr[i] = new Polinom[n];
}

void Matrica::add(int numb2)
{
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
        {
            arr[i][j].degree = numb2;
            arr[i][j].coffecients = new int[numb2];
            for (int k = 0; k <arr[i][j].degree ; k++)
            {
                arr[i][j].coffecients[k] = i;
            }
        }
}
std::ostream & operator<<(std::ostream &out, Matrica &mat)
{
    for (int i = 0; i < mat.n; i++)
        for (int j = 0; j < mat.n; j++)
        {
            out << "[" << i << "] " << "[" << j << "]=";
            for (int k = 0; k < mat.arr[i][j].degree; k++)
                out << mat.arr[i][j].coffecients[k] << std::endl;
        }
    return out;
}