C++ Code Example: Singleton Class (Ex:3)

Sphere: Related Content #include <iostream>
using namespace std;

class Singleton
{
  static Singleton s;
  int i;
  Singleton(int x) : i(x)
  {
    cout << "private constructor" << endl;
  }
  void operator=(Singleton&);
  Singleton(const Singleton&);

  public:
  static Singleton& getHandle()
    {
    cout << "calling getHandle()" << endl;
    return s;
    }
    int getValue() { return i; }
    void setValue(int x) { i = x; }
};

Singleton Singleton::s(47);

int main()
{
    //Singleton s1;
    Singleton& s = Singleton::getHandle();
    cout << s.getValue() << endl;
    Singleton& s2 = Singleton::getHandle();
    s2.setValue(9);
    cout << s.getValue() << endl;
}