A static member function in a class can access only other static members of a class or variables which are not members of its class. It can be invoked even without an object instance, unlike any other member functions:
class stat{ int num; public: stat(int n = 0) {num=n;} static void print() {cout <<"static member function" <Static members are used when all other data members of an object are also static; when the function does not depend on any other object member (like print() above); or simply when a global function is undesirable so it is wrapped in a class.
