custom stream manipulator for class

Question

I am trying to write a simple audit class that takes input via operator << and writes the audit after receiving a custom manipulator like this:

class C         


        

Answer 1

To make it work you have to add overload of operator << for functions, than call the function from it:

 class CAudit
 {
  //...other details here as in original question

  CAudit& operator << (CAudit & (*func)(CAudit &))
  {
        return func(*this);
  }
 };

 CAudit audit;
 audit << "some text" << CAudit::write;