Composite Design Pattern 设计模式组合

#include <set>
#include <iostream>
#include <string>
using namespace std;

class Coporate
{
protected:
string name;
set<Coporate *> coporate;

public:
explicit Coporate(string n = "", string d = "") : name(n), coporate() {}

virtual string getName()
{
return name;
}

virtual void add(Coporate *c)
{
coporate.insert(c);
}

virtual void show()
{
set<Coporate *>::iterator it = coporate.begin();
for ( ; it != coporate.end(); it++)
{
(*it)->show();
}
}

virtual void remove(Coporate *c)
{
coporate.erase(c);
}
};

class VicePresident : public Coporate
{
string division;
public:
explicit VicePresident(string n = "", string d = "")
{
name = n;
division = d;
}

virtual void show()
{
cout<<"Vice President's Name is : "<<name
<<"; In Division: "<<division<<endl;//关键处
}
};

class Division : public Coporate
{
public:
explicit Division(string n = "")
{
name = n;
}
};

class Coporation : public Coporate
{
public:
Coporation() {}
};

int main()
{
Coporation corp;

Division sale("Sales Department");
VicePresident vp1("Jelly", sale.getName());
VicePresident vp2("Kelly", sale.getName());
sale.add(&vp1);
sale.add(&vp2);

Division tech("Technique Department");
VicePresident vp3("Qilly", tech.getName());
VicePresident vp4("Melly", tech.getName());
tech.add(&vp3);
tech.add(&vp4);

VicePresident vp("Billy", "At large");
corp.add(&vp);

corp.add(&sale);
corp.add(&tech);

corp.show();

return 0;
}