/* A Programmer's Introduction to C# (Second Edition) by Eric Gunnerson Publisher: Apress L.P. ISBN: 1-893115-62-3 */ // 25 - Operator OverloadingAn Example // copyright 2000 Eric Gunnerson using System; struct RomanNumeral { public RomanNumeral(int value) { this.value = value; } public override string ToString() { return(value.ToString()); } public static RomanNumeral operator -(RomanNumeral roman) { return(new RomanNumeral(-roman.value)); } public static RomanNumeral operator +( RomanNumeral roman1, RomanNumeral roman2) { return(new RomanNumeral( roman1.value + roman2.value)); } public static RomanNumeral operator ++( RomanNumeral roman) { return(new RomanNumeral(roman.value + 1)); } int value; } public class OperatorOverloadingAnExample { public static void Main() { RomanNumeral roman1 = new RomanNumeral(12); RomanNumeral roman2 = new RomanNumeral(125); Console.WriteLine("Increment: {0}", roman1++); Console.WriteLine("Addition: {0}", roman1 + roman2); } }