Avoid warning 'Unreferenced Formal Parameter'

Question

I have a super class like this:

class Parent
{
public:
    virtual void Function(int param);
};

void Parent::Function(int param)
{
    std::cout << pa         


        

Answer 1

What about just adding reference with a comment:

void Child::Function(int param)
{
    param; //silence unreferenced warning
}

This was also suggested here: https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-4-c4100?view=vs-2019