Copy constructor

[eyali]

Hi All,


I know that if a have class member that its being allocated dynamically
I have to implement copy constructor and use deep copy (usually).

Can I use default copy constructor if I have only staticly allocated memebr?
Say for example I have the following

  class A
  {
    int x;
    int y[10];
  };

Can I use the compiler's copy constructor? and if so why I don't need to implement deep copy in order to copy array y?

Thank u in advance

[Catfish4]

Can I use the compiler's copy constructor? and if so why I don't need to implement deep copy in order to copy array y?

Hmm... because there's bitwise copying involved. Which means that data x and y are copied entirely.

When you use dynamic allocation, and you have a member int *z; all that is copied is the value of z.

However z is a pointer, so its value represents a memory address. So what is copied is a memory address, not the contents of the pointed-to memory.

Edit: I may be totally wrong. I'll test and see.
http://forums.codeguru.com/showthread.php?500827-C-Does-implicitly-defined-copy-constructor-bitwise-copy