C#运算符的重载

using System;
public struct Point
{
    public double x;
    public double y;
    public Point(double x, double y)
    {
        this.x = x;
        this.y = y;
    }
    // 运算符的重载，使加号具有新的功能
    // 可以实现两个Point对象直接相加，得到一个新的点
    public static Point operator +(Point p1, Point p2) 
    {
        return new Point(p1.x + p2.x, p1.y + p2.y);
    }
}
public class Program
{
    public static void Main(string[] args)
    {
        Point p1 = new Point(1, 2);
        Point p2 = new Point(2, 3);
        Point p3 = p1 + p2;
        Console.WriteLine(p3.x);
        Console.WriteLine(p3.y);
    }
}