class access to variables

[cdg]

Is there any way to directly access variables of one class from another
class without passing any public member variables. Similar to how any
function in a class can directly access (without passing an argument) any
member variable of its' own class.
I thought the only way this could be possible would be to make a function
a "friend" of the class. But I now beleive that it is still necessary to
pass variables to the other class, is this true.

 

[Victor Bazarov]

Is there any way to directly access variables of one class from
another class without passing any public member variables. Similar to
how any function in a class can directly access (without passing an
argument) any member variable of its' own class.

Sure. Make them public or declare the class that needs the access
a friend of the other class.

I thought the only way this could be possible would be to make a
function a "friend" of the class. But I now beleive that it is still
necessary to pass variables to the other class, is this true.

No, it is not true. All you need is to declare something a friend.

V

 

[shadowman615]

Is there any way to directly access variables of one class from another
class without passing any public member variables. Similar to how any
function in a class can directly access (without passing an argument) any
member variable of its' own class.
I thought the only way this could be possible would be to make a function
a "friend" of the class. But I now beleive that it is still necessary to
pass variables to the other class, is this true.

Do you mean private variables? Your explanation is a bit vague.

A few options:

1. Make the variables public.

2. Use public accessor methods that return or modify the values of
private class attributes

3. Make the other *class* a friend of the class that contains the
private variables you want to access.