How to set default parameter as class object in c++?

Question

I want to set my function with class object parameter set as default. But when I try to do that it fails in compilation.

class base {
 // ...
};

int myfunc(         


        

Answer 1

Objects can't be NULL in C++.

To set the parameter to default, just use:

int myfunc(int a, base b = base())