addition of int to object member

[mzimmers]

Hi -

This is sort of a follow-on to an earlier thread, but I think it's different enough to merit a separate thread.

I have a class:

class reg {
   int c, n, ns;
<lots of other stuff>

I would like to be able to support this:

reg x, y;

y = x + 2;

With the resultant operation of y.ns = x.ns + 2;

What's the best way to do this? Thanks...I hope I made the explanation clear.

[jsmith]

It's hard to think of what operator+ does for types other than numbers (mathematical addition) or strings (concatenation). I would therefore not use operator+ for your case. Instead create a member (or friend, or whatever) with a different name.

class reg {
   public:
       reg operator+( int rhs ) const;
};

or

// Note: Need friendship since you have to access private members of reg
reg operator+( const reg& lhs, int rhs )
{
}

[Disch]

Again I really think you are misusing/abusing operator overloading.

Operator overloading is there to make code more intuitive. This doesn't seem like it would accomplish that.


Just use a normal function for this. No need to overload the + operator.