4elist1207.cpp

《21天学通C＋＋》附盘的原代码。书上的每个例子在这里都有相应的C语言程序。

//Listing 12.7 Calling base method from overridden method.

#include <iostream>
using namespace std;

class Mammal
{
public:
	void Move() const { cout << "Mammal move one step\n"; }
	void Move(int distance) const
	{
		cout << "Mammal move " << distance;
		cout << " steps.\n";
	}

protected:
	int itsAge;
	int itsWeight;
};

class Dog : public Mammal
{
public:
	void Move()const;

};

void Dog::Move() const
{
	cout << "In dog move...\n";
	Mammal::Move(3);
}

int main()
{
	Mammal bigAnimal;
	Dog fido;
	bigAnimal.Move(2);
	fido.Mammal::Move(6);
	return 0;
}