/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Use XOR to encode and decode a message.
using System;
public class Encode {
public static void Main() {
char ch1 = 'H';
char ch2 = 'i';
char ch3 = '!';
int key = 88;
Console.WriteLine("Original message: " +
ch1 + ch2 + ch3);
// encode the message
ch1 = (char) (ch1 ^ key);
ch2 = (char) (ch2 ^ key);
ch3 = (char) (ch3 ^ key);
Console.WriteLine("Encoded message: " +
ch1 + ch2 + ch3);
// decode the message
ch1 = (char) (ch1 ^ key);
ch2 = (char) (ch2 ^ key);
ch3 = (char) (ch3 ^ key);
Console.WriteLine("Decoded message: " +
ch1 + ch2 + ch3);
}
}
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