//A.h
#ifndef _A_H_
#define _A_H_
#include "B.h"
class A
{
A()
{
b = new B(this);
}
B b;
}
#endif
//B.h
#ifndef _B_H_
#define _B_H_
#include "A.h"
class B
{
B(A &a);
}
#endif
Simple OO question.
Author
My C++ is unfrotunately a bit rusty and I've run into a problem I don't remember how to get around.
If you have the following layout:
The above code wouldn't compile because the line: B(A &a); A hasn't been defined yet.
How do you get around a problem like this when you want a class to pass a reference of itself to a child?
//B.h#ifndef _B_H_#define _B_H_#include "A.h"class A;class B{ B(A &a);}#endifBy doing this you're telling the linker that there is a class A, but you'll give the definition later.
Quote:Original post by Alan Kemp
You can't solve this with references, you will have to use pointers.
*** Source Snippet Removed ***
Alan
I somewhat agree... Why not, though?
If you pass a reference of the value of this, it should work (like in this example of an overloaded operator):
Log &Log::operator <<(const string &Message) { m_LogFile << Message; return (*this);}So, in your example it wold be:
b = new B((*this));
As for the other part, just foreward declare: (some random off-top-head code)
class X;class Y { ...};class X { ... };But then again, you'll have to fix that to go with your files ;).
Good luck!
C++
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