Using Declarations
	class base {   public:     void fun(int) {       cout <<"base::fun(int)" <<endl;     }     void fun(double) {       cout <<"base::fun(double)" <<endl;     } }; class derived : public base {   public:     using base::fun;  //fun(int) & fun(double) now in scope     void fun(int) {   //hides fun(int) brought into scope       cout <<"derived::fun(int)" <<endl;     }     void fun(char*) { //defines new fun(char*)       cout <<"derived::fun(char*)" <<endl;     } };