pointers?...a few questions

Robbie12

Q1:Does a pointer allow you to defeat scope?

Q2:Do you need a pointer to assign to a "new" on the heap

int *Array;
Array=new double[]

Q3:Can i assign array(the pointer) in any function in the class implementation?

Q4:You know for a copy constructor its always a refrence type as a parameter

class example;
...
 
example :: example(const example&)

its something like this now if this could be explained to me i really do think i could logically get alot of other things aswell as just copy constructors
why is it a refrence why can it not be just of type "example"?? so walk me through it as i give my parameter object of class example say example1 and i pass this object as a parameter does this become the refrence or what or is this refrenced to?and what is the purposeof it how is it useful to have it as a refrence when do you know to make it a refrence?


if you can answer these questions especially the last 1 its really appreaciated!!!

Anima

Q4:You know for a copy constructor its always a refrence type as a parameter

Code:
class example;
...

example :: example(const example&)
its something like this now if this could be explained to me i really do think i could logically get alot of other things aswell as just copy constructors
why is it a refrence why can it not be just of type "example"?? so walk me through it as i give my parameter object of class example say example1 and i pass this object as a parameter does this become the refrence or what or is this refrenced to?and what is the purposeof it how is it useful to have it as a refrence when do you know to make it a refrence?

You should read up on passing by reference and passing by value.

Webmonkey

Have a read of this: http://smart2help.com/e-books/ticpp-2nd-ed-vol-one/Chapter11.html