命名空间内错误c2248朋友类

Question

I'm trying to set up code similar to this:

//Class1.h
namespace A {
    class Class1 {
        friend class Class2
        public:
            Class1();
            ~Class1();
        private:
            void Create() { /*do nothing for now*/ };
    };
}

//Class2.h
#include "Class1.h"
namespace A {
    class Class2 {
        void Test();
    };
} //end namespace A

//Class2.cpp
#include "Class2.h"
namespace A {
    void Class2::Test() {
        Class1 object = Class1();
        object.Create(); //error c2248
    }
}

And I'm getting the error

"Error 101 error C2248: 'Class1::Create' : cannot access private member declared in class 'Class1'"

. What would cause this? Am I declaring friendship the wrong way?

Answer 1

I tried your example with Code:Blocks 13.12 (SDK Version 1.19.0) as well as on ideone.com .

The only changes I made to get it compile successfully was

• adding the semicolon after the friend statement
• adding empty blocks {} to ctr and dtr of Class1
• of course, I also removed the include statements (put all into one file)