What is good practice for generating verbose output?

Question

what is good practice for generating verbose output? currently, i have a function

bool verbose;
int setVerbose(bool v)
{
    errormsg = \"\";
    verbose = v;
           


        

Answer 1

You can wrap your functionality in a class that supports the << operator which allows you to do something like

class Trace {
   public:
      enum { Enable, Disable } state;
   // ...
   operator<<(...)
};

Then you can do something like

trace << Trace::Enable;
trace << "deleting interp"