Question

I’m new to C++ and trying to figure out the differences between pointer and reference. I’ve just read this short summary.

In the article, the author mentioned that day *operator++ (day *d); won’t compile (note: day is an enum type) and argued that the parameter for this overloaded operator function must be type T, T&, or T const&, where T is a class or enum type.

I assume that pointer is a built-in type rather than a class or enum so it can’t be used to overload operators and that operator overloading is not possible for all built-in types such as int and double.

For example, int i = 1; ++i; would never result in i being 3 by overloading the ++ operator for the type int.

Am I correct? Please help me understand this problem better.

Answer 1

First rule in Operator overloading is:
You cannot overload operators for built-in data types, You can only for your custom data types, So you are correct in that regard.