using System;

public class Program

{

    public static void Main()

    {

        Vector2 myVec = new(5, 6);

        myVec = myVec with { X = 7 };

        Console.WriteLine(myVec.X);

    }

}

​

public struct Vector2

{

    public Vector2(float x, float y)

    {

        X = x;

        Y = y;

    }

    public float X;

    public float Y;

}

​