#include <iostream>

class A
{
	int a;
public:
	A(int a)
	{
		std::cout<<"父類構造\n";
	}
	~A()
	{
		std::cout<<"父類析構\n";
	}
};

class B : public A
{
public:
	//當父類只有帶參構造的時候，子類必須寫建構函式，並且用
	//成員初始化列表為父類傳參,告訴編譯器呼叫父類的什麼構造
	B() : A(3)
	{
		std::cout<<"子類構造\n";
	}
	B(int b) : A(b)
	{
	}
};


class SXB
{
	int size;
	int len;
	int* p;
public:
	SXB(int Size)
	{
		size = Size;
		len = 0;
		p = new int[size];
	}
	~SXB()
	{
		delete [] p;
	}
};
class Stack : private SXB
{
public:
	
};