请看代码，是否是析构函数问题？

Question

// Practice17.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <iostream>using namespace std;class base{private: int i;public: base(int a) {  i = a; } void show() {  cout << i << endl; }};class derived :public base{private: base d;public: derived(int i) :base(i) {  d(i); } void show(){  base::show(); }};int _tmain(int argc, _TCHAR* argv[]){ derived obj(100); obj.show(); system("pause"); return 0;}