I'm having a problem with a class like this:

class Sprite {
    ...
        bool checkCollision(Sprite &spr);
    ...
};

So, if I have that clase, I can do this:

ball.checkCollision(bar1);

But if I change the class to this:

class Sprite {
    ...
        bool checkCollision(Sprite* spr);
    ...
};

I have to do this:

ball.checkCollision(&bar1);

So, what's the difference?? It's better a way instead other?

Thank you.