C++; Singleton Design Pattern

Singleton is a creational design pattern.
Provide one and only instance of an object.

#include using namespace std; 

class MySingleton 

{ 

      public: static MySingleton* iInstance; 

      public: static MySingleton* GetInstance(); 

      private: MySingleton(); 

}; 

MySingleton* MySingleton::iInstance = NULL; 

MySingleton::MySingleton() 

{ 

      cout << "Inside construtor ..." << endl; 

} 

MySingleton* MySingleton::GetInstance() 

{

      if ( iInstance == NULL ) 

      {  

           iInstance = new MySingleton(); 

      } 

     return iInstance; 

} 

void main() 

{ 

     MySingleton* obj; 

     obj = MySingleton::GetInstance(); 

}