C# Operator Overloading

operator_example.cs

using System;
					
public class Program
{
	public static void Main()
	{
		var a = new Thing();
		var b = new Thing();
		
		Console.WriteLine(a + b);
		Console.WriteLine(a - b);
		Console.WriteLine(a * b);
		Console.WriteLine(a / b);
		Console.WriteLine(a % b);
		Console.WriteLine(a[2]);
		Console.WriteLine(a[2] = b);
		Console.WriteLine(a++);
		Console.WriteLine(a--);
	}
	
	public class Thing {
		public int Value = 5;
		
		public override string ToString()
		{
			return Value.ToString();
		}
		
		public static Thing operator+ (Thing left, Thing right)
		{
			var result = new Thing();
			result.Value = left.Value + right.Value;
			return result;
		}
		public static Thing operator- (Thing left, Thing right)
		{
			var result = new Thing();
			result.Value = left.Value - right.Value;
			return result;
		}
		public static Thing operator* (Thing left, Thing right)
		{
			var result = new Thing();
			result.Value = left.Value * right.Value;
			return result;
		}
		public static Thing operator/ (Thing left, Thing right)
		{
			var result = new Thing();
			result.Value = left.Value / right.Value;
			return result;
		}
		public static Thing operator% (Thing left, Thing right)
		{
			var result = new Thing();
			result.Value = left.Value % right.Value;
			return result;
		}
		public Thing this[int i]
		{
			get { Value = i; return this; }
			set { this.Value = value.Value; }
		}
		public static Thing operator++ (Thing thing)
		{
			thing.Value = thing.Value + 1;
			return thing;
		}
		public static Thing operator-- (Thing thing)
		{
			thing.Value = thing.Value - 1;
			return thing;
		}
	}
}