Coding the struct

Let's begin by deleting all of the default code and comments in the class you have created. We're going to make a really simple struct called Point. Enter the following, starting from the very top:

public struct Point 

You can still define a couple of variables to represent Point and properties. So, for example, enter the following below the public struct Point line:

public double X { get; set; } 
public double Y { get; set; } 

You can also initialize them and you can still have a constructor. So, type the following below the preceding lines:

public Point(double x, double y) 

Then, you can set the values inside the constructor of the properties. Enter the following within a set of curly braces below this line:

X = x; Y = y; 

So, X equals x and Y  equals y, as we have here. 

This is the basic struct example, as shown in Figure 6.19.2. Remember, it looks superficially similar to a class, but internally, it behaves differently because when you make copies it's a "by value" kind of...