Passing a reference to an internal class

From: Peter Gordon (petergo_at__deleteme_.netspace.net.au)
Date: 03/14/05 

Date: Mon, 14 Mar 2005 00:46:37 +0000 (UTC)

Is it possible to pass a reference defined in a class
to an internal class? In the code below, the constructor
for class B does not compile.

#include <fstream>

class A {
public:
    A(std::ifstream& _afin) : afin(_afin) {}
    std::ifstream& GetFileH() { return afin; }

    class B {
        B(std::ifstream& _bfin) :
                bfin( _bfin = A::GetFileH(); ) {} // B constructor
    private:
        std::ifstream& bfin;
    };

private:
    std::ifstream& afin;
};

int main() {
    std::ifstream fileH;
    fileH.open("afile");
    class A x(fileH);
    return 0;
}

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