...
| Code Block | ||
|---|---|---|
| ||
class Employee {
public:
Employee(string theName) : name(theName) {};
string getName() const {return name;}
virtual void print() const {
cout << "Employee: " << getName() << endl;
}
private:
string name;
};
class Manager : public Employee {
public:
Manager(string theName, Employee theEmployee) :
Employee(theName), assistant(theEmployee) {};
Employee getAssistant() const {return assistant;}
virtual void print() const {
cout << "Manager: " << getName() << endl;
cout << "Assistant: " << assistant.getName() << endl;
}
private:
Employee assistant;
};
int main () {
Employee coder("Joe Smith");
Employee typist("Bill Jones");
Manager designer("Jane Doe", typist);
coder = designer; // slices Jane Doe!
coder.print();
}
|
In this code, class Manager is derived from class Employee and adds additional information, namely the data member assistant. In main, the object designer of class Manager, which contains an assistant data member typist, is copied by value to the object coder of class Employee. This results in the designer object being sliced, and only the Employee information is copied. Hence, the print() statement results in the output:
...