CODEWITHSUNDEEP
c++overloadingadditionoperator-keyword
user2616744
user2616744

Reputation: 41

Overloading + operator, Linked Lists

In my text book they give an example of overloading the + operator

Sales_item operator+ (const Sales_item& lhs, const Sales_item& rhs)
 {
   Sales_item ret(lhs);
   ret += rhs;
   return ret;
 }

But when I try it for my linked list, it tells me it can only take zero or one argument.

What is it that I'm not seeing and how would you even add 2 objects if you can't take 2 arguments?

Upvotes: 1

Views: 80

Answers (1)

cpp
cpp

Reputation: 3801

If your operartor+ is a member function it doesn't need two arguments, as the object of the class you call operator+ on is the left-hand side argument. But you have already such an operator: operator+=. As it was suggested by chris and nims move operator+ outside Sales_item class.

Upvotes: 1

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