point/struct-immutable/Point.cs - The struct Point - immutable.

Lecture 4 - slide 14 : 29 Program 1

using System;

public struct Point {
  private readonly double x, y;

  public Point(double x, double y){
    this.x = x; this.y = y;
  }

  public double Getx (){
    return x;
  }

  public double Gety (){
    return y;
  }

  public Point Move(double dx, double dy){
    return new Point(x+dx, y+dy);
  }

  public override string ToString(){
    return "Point: " + "(" + x + "," + y + ")" + ".";
  }
}