[c++]容器類。繼承類的構造和析構

標籤：c++   類   繼承   

#include<iostream>using namespace std;class Base{    int x;public:    Base(int a)    {        x = a;        cout<<"father constructing "<<x<<endl;    }    ~Base()    {        cout<<"father destructing "<<x<<endl;    }};class Dervied:public Base{    int y;    Base B2,B1;//只與定義順序有關public:    Dervied(int a = 0,int b = 0,int c = 0,int d = 0):B1(d),Base(b),B2(c),y(a)//與參數列表的順序無關    {        cout<<"son constructing "<<y<<endl;    }    ~Dervied()    {        cout<<"son destructing "<<y<<endl;    }};int main(){    Dervied(1,2,3,4);    return 0;}

[c++]容器類。繼承類的構造和析構