Left and Right operand of comma operator has no effect (Warning)

Question

I'm getting a warning in my constructor in my class, and I've never seen it before. This is what my constructor looks like.

    Account(std::string n = "NULL", std::string i = "0", Stats s = (0,0,1) ) 
        : name(n), id(i), stat(s) {}

If I remove any of these commas it results in a compile error, no? Is this warning incorrect, or is there something I can change to fix it?

Answer 1

The issue is this: (0,0,1).

That is parentheses around the expression 0,0,1, which evaluates to 1. (The comma operator is an infix operator that evaluates the first and second expression and returns the second. In this case, you have two such operators.)

I don't know what you wanted there, but I'm guessing that isn't it.

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EDIT: It seems you want Stats s(0,0,1).