C++ Programming: A Practical Approach

Operator Overloading 193

4.10 Deep Knowledge Section

Why can the scope resolution operator (::), sizeof operator, member selection operator (.), con-

ditional operator not be overloaded?

Scope resolution (::)

The scope resoultion operator is used to identify a variable defined in

a particular scope. Based on the operands of

::, the scope of the vari-

able is determined. Hence, there is no need to overload because it

deals with names and not with expressions.

sizeof sizeof operator works with objects in the same way it operates with

variables. If the

sizeof operator is overloaded, it will create a confusion

if it returns a size different from the ...