convert reference to pointer representation in C++

Question

Is there a way to "convert" a reference to pointer in c++? In example below, func2 has already defined prototype and I can't change it, but func is my API, and I'd like to either pass both parameters, or one (and second set to NULL) or neither (both set to NULL):

void func2(some1 *p1, some2 *p2);

func(some1& obj, some2& obj2)
{
   func2(..);
}

Answer 1

func2(&obj, &obj2);

Use reference parameters like normal variables.