The following code example is taken from the book
Object-Oriented Programming in C++
by Nicolai M. Josuttis, Wiley, 2002
© Copyright Nicolai M. Josuttis 2002
#include <iostream>
#include "person.hpp"
int main()
{
CPPBook::Person nico("Josuttis","Nicolai");
/* declare variable of the type Salutation of the class CPPBook::Person
* and initialize it with the value empty of the class CPPBook::Person
*/
CPPBook::Person::Salutation noSalutation = CPPBook::Person::empty;
//...
if (nico.salutation() == noSalutation) {
std::cout << "salutation of Nico was not set" << std::endl;
}
}