C++ non class scope replacement for this.x = x;

Question

In C++ I can do this in classes:

class MyClass {
    public:
        int number;
        void SetNumber(int number);
};

void MyClass::SetNumber(int number)
{
    this->number = number;
}

But what about this:

int number;

void SetNumber(int number)
{
    //What do I do here?
}

This problem is because there isn't a "this" for the scope, there are only "this"s for classes. Any ideas?

Answer 1

It sounds like you are looking for

::number = number;

This assumes that the top number is declared at the global scope. If it isn't, we need more context.

Answer 2

I think the very OBVIOUS solution is to NOT name the argument of a function the same as a global variable. Change either number to aNumber ("a" for "argument") or change number to gNumber ("g" for "global"). Or make the argument num, n, nr, x, kerflunk or anything other than number. [And this really applies to member functions too, in my opinion].