StructExample_Vector2D_Addition

using System;

class Program
{
    static void Main(string[] args)
    {
        Vector2D v1 = new Vector2D(3, 4);
        Console.WriteLine(v1);
        Vector2D v2;
        v2.x = 5;
        v2.y = 6;
        Console.WriteLine(v2);
        Vector2D v3 = v1 + v2;
        Console.WriteLine(v3);
    }
}

struct Vector2D
{
    public Vector2D(double x, double y)
    {
        this.x = x;
        this.y = y;
    }
    public double x;
    public double y;
    public static Vector2D operator +(Vector2D lhs, Vector2D rhs) // vector addition
    {
        return new Vector2D(lhs.x + rhs.x, lhs.y + rhs.y);
    }
    public override String ToString()
    {
        return $"x: {x}, y: {y}";
    }
}