How can I access a pointer in a different function? [closed]

Question

How can I access a pointer, box in this code, from in a different function, such as this code's update gameloop?

int main()
{
    ScenePrimitive *box = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 1,1,1);
}
int update()
{
 cout box;
}

Answer 1

You could use a global variable for your sceneprimtive:

ScenePrimitive* gBox;

int main()
{
    gBox = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 1,1,1);

    //..
    delete gBox;
}

int update()
{
    cout gBox;
}

OR take the sceneprimitive as an parameter of your update function:

int update(ScenePrimitive* &Box)
{
    cout Box;
}

int main()
{
    ScenePrimitive* Box = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 1,1,1);

    update(Box);

    //..
    delete Box;
}