子类继承父类后，当创建子类对象，也会调用父类的构造函数

  • 省流：先构造父类，再构造子类；析构顺序与构造相反

代码示例

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#include<iostream>
using namespace std;


class Base {
public:
	Base() {
		cout << "Base的构造函数" << endl;
	}
	~Base(){
		cout << "Base的析构函数" << endl;
	}
};

class son :public Base {
public:
	son() {
		cout << "son的构造函数" << endl;
	}
	~son() {
		cout << "son的析构函数" << endl;
	}
};

int main() {
	son s;
	return 0;
}