What is Static Member Function in C++

Static function is used to access static data members of a class.Static function is called using class name and scope resolution operator. We do not need an object to call static function. //Header fileclass singleton { static singleton* m_instance; singleton() {} singleton& operator=(const singleton& ); singleton(const singleton& ); public: ~singleton() {} static singleton* getInstance(); }; //Source file singleton* singleton::m_instance = NULL;singleton* singleton::getInstance() { //static function accessing static data member m_instance if (NULL == m_instance) { return new singleton; …