Creating objects

[ikl]

When creating a list of objects of the same class, what should be concerned
to decide if using "new" or not? Since how many number of the objects are
unknown until runtime, probably it is not a good idea to create like:

class A;

A a[SIZE];
....

How would like to code this? Thanks!

 

[John Harrison]

When creating a list of objects of the same class, what should be concerned
to decide if using "new" or not?

You should almost never use new. If you need dynamic allocation of objects
use an STL container. E.g.

std::list<A> my_list;
std::vector<A> my_vector;

The advantages of these are that you get a rich set of functionality,
instead of prmitive arrays, and you don't have to remember to clean up these
object you won't get memory leaks.

Since how many number of the objects are
unknown until runtime, probably it is not a good idea to create like:

class A;

A a[SIZE];
...

How would like to code this? Thanks!

std::vector<A> my_vector(SIZE);

john