c++ 初始化列表和构造函数初始化区别

#include <iostream>

class MyContruct
{
public:
	MyContruct()
	{
		std::cout << "MyContruct() is called" << std::endl;
	}
	MyContruct(const MyContruct&)
	{
		std::cout << "MyContruct(const MyContruct&) is called" << std::endl;
	}
	MyContruct& operator=(const MyContruct&)
	{
		std::cout << "MyContruct& operator=(const MyContruct&) is called" << std::endl;
		return *this;
	}
	~MyContruct()
	{
		std::cout << "~MyContruct() is called" << std::endl;
	}
};

class Mytest
{
public:
	Mytest(MyContruct mc) :m_pMc(mc)
	{
		std::cout << "Mytest(MyContruct mc) is called" << std::endl;
		/*m_pMc = mc;*/
	}
	~Mytest()
	{
		std::cout << "~Mytest() is called" << std::endl;
	}
private:
	MyContruct m_pMc;
};


int main()
{
	MyContruct mc;
	std::cout << std::endl;
	Mytest mt(mc);
	std::cout << std::endl;
	return 0;
}