matr_pow

matr_t matrix_cpy(matr_t matrix, int row, int col)
{
    matr_t matrix_b = malloc(sizeof(matr_t));
    for(int i = 0; i < row; i++)
    {
        *(matrix_b + i) = malloc(sizeof(arr_t) * col);
    }

    for(int i = 0; i < row; i++)
        for(int j = 0; j < col; j++)
        {
            *(*(matrix_b + i) + j) = *(*(matrix + i) + j);
        }

    return matrix_b;
}

matr_t matr_pow(matr_t matrix, int degree, int row, int col)
{
    matr_t matrix_b = matrix_cpy(matrix, row, col);

    for(int k = 1; k < degree; k++)
    {
        for (int i = 0; i < row; i++)
        {
            arr_t arr_tmp = calloc(col, sizeof(int));
            for (int j = 0; j < col; j++)
                for (int q = 0; q < col; q++)
                    arr_tmp[j] += matrix[i][q] * matrix_b[q][j];

            free(*(matrix + i));
            *(matrix + i) = arr_tmp;
        }
    }
    matrix_delete(matrix_b, row, col);

    return matrix;
}