Thread: using a class constructor w/ class array

I don't know how to describe this, so i'll give some example code:

Code:

class neural_node{
    public:
        nueral_node(int size){
            node_size=size;
        }
    private:
        int node_size;
}

class layer{
    public:
        layer(int node_size, int number_of_nodes){
            layer_nodes=new neural_node[node_size][number_of_nodes];
        }
    private:
        neural_node* layer_nodes;
}

in this, both nueral_node and layer are going to be treated as data types.

my question is this: how can I use the neural_node constructor for the array?

any help will be greatly appreciated!

p.s.
can i actually use a pointer on a class? it's been so long since i used classes.

It isn't clear why you are trying to allocate a two-dimensional array, so I'm assuming that's just a typo. Anyway, you can't declare a variable-length array of objects that don't have a default constructor. Moreover, you shouldn't be using 'new' to allocate *any* array for that matter (quite error prone). The best solution would be to use an std::vector:

Code:

class neural_node 
{
    public:
        neural_node(int size){
            node_size=size;
        }
    private:
        int node_size;
};

class layer {
    public:
        layer(int node_size, int number_of_nodes)
	: layer_nodes( number_of_nodes, neural_node( node_size ) ) {
            // ...similar to...
	    layer_nodes.resize( number_of_nodes, neural_node( node_size ) );
        }
    private:
         std::vector< neural_node > layer_nodes;
};