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Old 07-28-2003, 02:33 PM   #1
Jo_Nak
LQ Newbie
 
Registered: Jun 2003
Posts: 20

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relation between classes


Hi,

I have two classes. The first one contains a lot of variables that I would like to access directly from the second class without having to implement functions such as GetProperties()... and Set()...

How can I do that, what is the synthax? By friend functions or inheritance or ... ?

Thx a lot in advance.

JN
 
Old 07-28-2003, 02:44 PM   #2
kev82
Senior Member
 
Registered: Apr 2003
Location: Lancaster, England
Distribution: Debian Etch, OS X 10.4
Posts: 1,263

Rep: Reputation: 51
from what you say a friend class would be the best implementation. hopefully the following code should help.
Code:
class B;

class A
{ 
int p;
friend class B;
public:
int whatIsP() { return p; }
};

class B
{
public:
void setP(A& a, int b) { a.p=b; }
};

int main()
{
A a;
B b;

b.setP(a, 0);
cout << a.whatIsP();
b.setP(a, 1);
cout << a.whatIsP();

return 0;
}
have a look at www.cplusplus.org for the syntax if ive done it wrong.

Last edited by kev82; 07-28-2003 at 02:47 PM.
 
Old 07-28-2003, 02:48 PM   #3
Strike
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Registered: Jun 2001
Location: Houston, TX, USA
Distribution: Debian
Posts: 569

Rep: Reputation: 31
What language you are using would be nice...
 
  


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