前置递减和后置递减重载

#include<iostream>
using namespace std;

class myinteger
{
public:

	myinteger& operator--()
	{
		this->m_a--;
		return *this;
	}
	myinteger operator--(int)
	{
		myinteger temp = *this;
		this->m_a--;
		return temp;
	}



	int m_a;
};

ostream& operator<<(ostream& cout,myinteger p)
{
	cout << p.m_a;
	return cout;
}

void test01()
{

	myinteger p;
	p.m_a = 10;
	cout << --(--p) << endl;
	cout << (p--) << endl;
	cout << p << endl;

}

int main() {

	test01();


	system("pause");
	return 0;
}