子类中调用基类方法(C++)

class_overwrite.cpp

#include <iostream>
using namespace std;

class Animal
{
public:
	void move() const {cout<<"Animal move one step\n";}
	void move(int distance) const{
		cout<<"Animal move "<<distance;
		cout<<" steps."<<endl;
	}
protected:
	int itsAge;
	int itsWeight;
};	/*注意对于类的声明，末尾的分号不要忘记*/

class Dog:public Animal{
public:
	void move() const;	//覆盖基类的同名函数,
						//导致基类的两个重载函数对于基类都不可见了，
						//别忘记const，它也是函数特征的一部分
};	/*注意对于类的声明，末尾的分号不要忘记*/

void Dog::move() const{	//不要忘记const关键字
	cout<<"In dog ,default move....";
	Animal::move(3);	//显式调用基类同名函数
}

int main(){
	Animal bigAnimal;
	Dog fido;
	bigAnimal.move(2);
	fido.move();
	fido.Animal::move(6);
	return 0;
}
/**====result========
* Animal move 2 steps.
* In dog ,default move....Animal move 3 steps.
* Animal move 6 steps.
 */