How to make multiple "objects" (classes question) easy.

for example

Code:

---

for(t = 0; t<100; t++){
sands[t] = new sand(10,t)
}

---

I was wondering how you can use the same function like that. The above wont work. And yes it is defined:

Code:

---

class Dot
{
    private:
    int x, y;
    int xVel, yVel;
    public:
    Dot(int x,int y);
    void fall();
    void move();
    void show();
    void setxy(int xx,int yy);
};

Then those functions are further defined

---

I might have to explain my problem better...

One way is to define a function object:

Code:

---

class MakeDot
{
public:
    MakeDot(int x) : x(x), y(0) {}

    Dot operator()()
    {
        return Dot(x, y++);
    }
private:
    int x;
    int y;
};

---

Then you use the function object in conjunction with std::generate_n(), e.g.,

Code:

---

std::vector<Dot> sands;
std::generate_n(std::back_inserter(sands), 100, MakeDot(10));

---

In my first example...
Where would I define the "sands" thing?

Quote:

---

Originally Posted by azjherben

Where would I define the "sands" thing?

---

Um, you would define it before you use it.

On a hunch, are you a Java programmer? I have a feeling that you are unnecessarily and incorrectly using new due to such a background.