如何从上面的 class 调用 function？ class 未被继承

Question

class a{

private:
        class b* b = new b;
        int getSomeWhatValue(){
              
        }
};

class b{
private:
        void bFunc(){
               //I want to call an getsomewhatvalue() here
        }
};

I made the code really simply. How do I call an a's function at b? I tried to use this pointer, but didn't work:(

Answer 1

Your scenario will cause a cyclic calling (ie never ending loop of A creating an instance of B which in tern creates an instance of A and the loop continues), so its not permissible.

You have two options:

1. Declare "int getSomeWhatValue()" as static, and call it through the class (instead through an instance).
2. Pass a pointer to the function you want to call (int getSomeWhatValue()) and delcare the prototype somewhere outside of class A or B.