more warnings

[asdf]

hi, all, how to deal with such warnings?

' ' declared 'static' but never defined

in my opinion, since the variable is not defined, can I directly delete
the variable to quiet the warning?

Thanks all.

 

[Marcus Kwok]

hi, all, how to deal with such warnings?

' ' declared 'static' but never defined

in my opinion, since the variable is not defined, can I directly delete
the variable to quiet the warning?

If you never use the variable anywhere, then you can delete it.
However, more likely, it has been declared but not defined, but it is
being used, in which case you must define it somewhere (usually in a
..cpp file).

For example:

class C {
public:
// declaration
static int Num;
};

// definition
int C::Num = 0;