Hi Everyone,

It is possible to pass a structure to a function by value in c just
like how class is being passed to functions by value in c++.
c++ introduces the copy constructor for this very purpose of making
sure deep copy is performed on c++ objects which have pointers
pointing to some memory location.

It is very much possible to have a c structure having a pointer, how
does c solve the problem? making sure deep copy is done?

Thanks in advance!!!

Rahul wrote:
> Hi Everyone,
>
> It is possible to pass a structure to a function by value in c just
> like how class is being passed to functions by value in c++.
> c++ introduces the copy constructor for this very purpose of making
> sure deep copy is performed on c++ objects which have pointers
> pointing to some memory location.
>
> It is very much possible to have a c structure having a pointer, how
> does c solve the problem? making sure deep copy is done?
>
It doesn't, you get a shallow copy.

Why would you want to pass such a structure by value?

--
Ian Collins.

Rahul said:

> Hi Everyone,
>
> It is possible to pass a structure to a function by value in c just
> like how class is being passed to functions by value in c++.
> c++ introduces the copy constructor for this very purpose of making
> sure deep copy is performed on c++ objects which have pointers
> pointing to some memory location.
>
> It is very much possible to have a c structure having a pointer, how
> does c solve the problem? making sure deep copy is done?

C doesn't solve the problem. C assumes you know how to solve the problem.

(It's not difficult. Step 1: write a "copy constructor" function. Step 2:
call it to create a copy. Step 3: use the copy. Step 4: destroy the copy
when you're done with it.)

--
Richard Heathfield <http://www.cpax.org.uk>
Email: -http://www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999