/// <summary>
/// While a struct is a value type, a class is a reference type.
/// Value types hold their value in memory where they are declared,
/// but reference types hold a reference to an object in memory.
///
/// If you copy a struct,
/// C# creates a new copy of the object and
/// assigns the copy of the object to a separate struct instance.
/// However,
/// if you copy a class,
/// C# creates a new copy of the reference to the object and
/// assigns the copy of the reference to the separate class instance.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
//rectangle rect1 = new rectangle();
//rect1.width = 1;
//rect1.height = 3;
//Rectangle rect1 = new Rectangle
//{
// Width = 1,
// Height = 3
//};
OverLoadRectangle rect1 = new OverLoadRectangle();
rect1.Width = 1;
rect1.Height = 3;
Console.WriteLine("rect1: {0}:{1}", rect1.Width, rect1.Height);
OverLoadRectangle rect2 = new OverLoadRectangle(5, 7);
Console.WriteLine("rect2: {0}:{1}", rect2.Width, rect2.Height);
OverLoadRectangle rect3 = rect1.Add(rect2);
Console.WriteLine("rect3: {0}:{1}", rect3.Width, rect3.Height);
Console.ReadKey();
}
/// <summary>
/// In this case,
/// the Add method will increase the Height and Width of the current Rectangle instance
/// by adding the Height and Width in the rect parameter.
///
/// The result of the method is a new Rectangle with the added properties.
/// </summary>
/// <param name="rect"></param>
/// <returns></returns>
public OverLoadRectangle Add(OverLoadRectangle rect)
{
OverLoadRectangle newRect = new OverLoadRectangle();
newRect.Width = Width + rect.Width;
newRect.Height = Height + rect.Height;
return newRect;
}