callingbase.cpp

来自「《24学时精通c++》的光盘内容」· C++ 代码 · 共 36 行

 //Listing 16.7 Calling base method from overridden method.
 #include <iostream>
 
 class Mammal
 {
 public:
     void Move() const { std::cout << "Mammal move one step\n"; }
     void Move(int distance) const 
         { std::cout << "Mammal move " 
               << distance << " steps.\n"; }
 protected:
     int itsAge;
     int itsWeight;
 };
 
 class Dog : public Mammal
 {
 public:
     void Move()const;
 };
 
 void Dog::Move() const
 {
     std::cout << "In dog move...\n";
     Mammal::Move(3);
 }
 
 int main()
 {
     Mammal bigAnimal;
     Dog fido;
     bigAnimal.Move(2);
     fido.Mammal::Move(6);
     return 0;
 }