Estoy tratando de construir el mío.Matrix tipo que actúa en línea un estándarC matriz con matrices multidimensionales. Hasta ahora, esta es mi implementación:

#include <iostream>

/**
 * To build it use:
 *     g++ -std=c++11 test_template_initicialization.cpp -o main
 */
template <int width, int height>
struct Matrix
{
  long int _data[height][width];

  Matrix()
  {
  }

  Matrix(long int matrix[height][width]) : _data(matrix)
  {
  }

  /**
   * Overloads the `[]` array access operator, allowing you to access this class objects as the
   * where usual `C` arrays.
   *
   * @param  line the current line you want to access
   * @return      a pointer to the current line
   */
  long int* operator[](int line)
  {
    return this->_data[line];
  }

  /**
   * Prints a more beauty version of the matrix when called on `std::cout<< matrix << std::end;`
   */
  friend std::ostream &operator<<( std::ostream &output, const Matrix &matrix )
  {
    int i, j;

    for( i=0; i < height; i++ )
    {
      for( j=0; j < width; j++ )
      {
        output << matrix._data[i][j] << ", ";
      }

      output << matrix._data[i][j] << "\n";
    }
    return output;
  }
};

/**
 * C++ Matrix Class
 * https://stackoverflow.com/questions/2076624/c-matrix-class
 */
int main (int argc, char *argv[])
{
  Matrix<3, 3> matrix;
  std::cout << matrix << std::endl;

  matrix[0][0] = 911;
  std::cout << matrix << std::endl;

  std::cout << matrix[0] << std::endl;
  std::cout << matrix[0][0] << std::endl;

  Matrix<4,4> matrix2 = { 0 };
}

Cuando construyas el último ejemploMatrix<4,4> matrix2 = { 0 }; Recibo un error de tipos incompatibles:

D:\test_template_initicialization.cpp: In instantiation of 'Matrix<width, height>::Matrix(long int (*)[width]) [with int width = 4; int height = 4]':
D:\test_template_initicialization.cpp:67:29:   required from here
D:\test_template_initicialization.cpp:16:56: error: incompatible types in assignment of 'long int (*)[4]' to 'long int [4][4]'
   Matrix(long int matrix[height][width]) : _data(matrix)

La parte principal del error es'long int (*)[4]' to 'long int [4][4]'. loslong int (*)[4] viene de lamatrix2 = { 0 }; y ellong int [4][4] es mi declaración de plantilla de clase estándarlong int _data[height][width];.

Puedo arreglar miMatrix constructor, para que pueda aceptar estolong int (*)[4] procedente dematrix2 = { 0 }; llamada de inicialización?