技術標籤：C++面向物件

#include<iostream>
#include<string>
using namespace std;
//通過全域性函式過載

class MyInteger {
	friend  ostream&operator<<(ostream &cout, MyInteger m);

public:
	MyInteger() {
		m_Num = 0;
	}
	//過載前置--運算子
	MyInteger& operator--() {
		m_Num--;
		return *this;
	}
	//過載後置++運算子
 

	MyInteger operator--(int) {
		MyInteger temp = *this;
		m_Num--;
		return temp;
	}

	
private:
	int m_Num;
};

//還需要過載左移運算子
ostream & operator<<(ostream &cout, MyInteger m) {
	cout << m.m_Num;
	return cout;
}

void test01() {
	MyInteger myint;
	cout << --myint << endl;
 

	cout << myint <<endl;
}
void test02() {
	MyInteger myint;
	cout << myint-- << endl;
	cout << myint << endl;
}

int main() {
	test01();
	test02();
	return 0;
}