结构体重载运算符大全（运算、比较、赋值、输入输出）

运算：+, -, *, /, +=等等
比较：>, = ,<, ≥, ≤, ==, !=等
赋值：=
输入：>>
输出：<<

文章转载于https://blog.csdn.net/weixin_43899069/article/details/104442108

#include
#include
using namespace std; 

struct Point {
	int x, y;
	Point(int x = 0, int y = 0): x(x), y(y) {}
	
	//重载算术运算符(- * / +=同理)
	Point operator + (const Point& A) {
		x += A.x;
		y += A.y;
		return *this; 
	} 
	
	//重载比较运算符(< == != 同理) bool operator > (const Point& A) {
		return x > A.x;								 
	}
	
	//重载赋值运算符
	Point operator = (const Point& A) {
		x = A.x;
		y = A.y;
		return *this; 
	} 
		
	//重载输入输出运算符 
	friend istream& operator >> (istream& in, Point& P) {
		in >> P.x >> P.y;
		return in;
	}
	
	//重载输出运算符
	friend ostream& operator << (ostream&, const Point& P) {
		cout << "(" << P.x << "," << P.y << ")";
		return cout;
	} 
		 
}point[10];											//结构体数组 

int main()
{
	//创建 
	Point a(5,4), b(4,2);					//构造函数创建结构体 
	point[0].x = 2 ; point[0].y = 4;		//结构体数组创建结构体
	point[1].x = 1 ; point[1].y = 4;
	
	//算术运算符
	point[1] = point[1]+point[0];		
	
	//比较运算符			
	cout << (point[0]>point[1]) << endl;				
	
	//赋值运算符：
	point[2] = point[1];
	cout << point[2] << endl; //输入运算符 cin >> point[5]; 
	 
	//输出运算符 
	cout << point[5]; 
	return 0;
}