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

In C++ you don't have to give a parameter that you aren't using a name so you can just do this:

void Child::Function(int)
{
    //Do nothing
}

You may wish to keep the parameter name in the declaration in the header file by way of documentation, though. The empty statement (;) is also unnecessary.