What are the consequences of ignoring: warning: unused parameter

Question

I am working on a C++ project and I noticed that we have a number of warnings about unused parameters.

What effect could it have if these warnings are ignored?

Answer 1

That depends of if you intended to use the paramater. E.g.

const int Size = 12; // intended for use in some other function

char* MakeBuffer(int size)
{
   return new char[Size];
}

In this code 'size' is unused, and instead the constant 'Size' is being used. So the warning will highlight problems of this type for you.

However, if you never indented to use the parameter then it should just be removed from the method signature. Unless you need to match a signature for a virtual method, or function pointer, if that's the case then you don't have the option to remove it.