template<class T, unsigned ... RestD> struct Matrix;

template<class T, unsigned FirstDim > 
struct Matrix<T, FirstDim> {
  typedef T GenericDimType[FirstDim];

  GenericDimType data;
  inline T& operator[](unsigned i) { return data[i]; }
};

template<class T, unsigned FirstDim, unsigned ... RestD > 
struct Matrix<T, FirstDim, RestD...> {
  typedef typename Matrix<T, RestD...>::GenericDimType FirstDimType;
  typedef FirstDimType GenericDimType[FirstDim];

  GenericDimType data;
  inline FirstDimType& operator[](unsigned i) { return data[i]; }
}; 









#include <iostream>

int main() {
    Matrix<int, 2, 3, 4> m;

    int cnt = 0;
    for (size_t i = 0; i < 2; ++i) {
        for (size_t j = 0; j < 3; ++j) {
            for (size_t h = 0; h < 4; ++h) {
                m[i][j][h] = cnt++;
            }
        }
    }

    std::cout << "Data in matrix:\n";
    for (size_t i = 0; i < 2; ++i) {
        for (size_t j = 0; j < 3; ++j) {
            for (size_t h = 0; h < 4; ++h) {
                std::cout <<  m[i][j][h] << ' ';
            }
            std::cout << '\n';
        }
        std::cout << "ENDDIM\n";
    }

    std::cout << "Addresses in matrix:\n";
    for (size_t i = 0; i < 2; ++i) {
        for (size_t j = 0; j < 3; ++j) {
            for (size_t h = 0; h < 4; ++h) {
                std::cout <<  &m[i][j][h] << ' ';
            }
            std::cout << '\n';
        }
        std::cout << "ENDDIM\n";
    }
    return 0;
}