Hi all. I am completely stumped on the Caesar Cypher. I am very close, but keep getting an error and I can’t figure it out.
here is my code:
using System;
namespace CaesarCipher
{
class Program
{
static void Main(string args)
{
char alphabet = new char {‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’, ‘g’, ‘h’, ‘i’, ‘j’, ‘k’, ‘l’, ‘m’, ‘n’, ‘o’, ‘p’, ‘q’, ‘r’, ‘s’, ‘t’, ‘u’, ‘v’, ‘w’, ‘x’, ‘y’, ‘z’};
Console.Write("Input secret message: ");
string message = Console.ReadLine();
char[] secretMessage = message.ToCharArray();
char[] encryptedMessage = new char[25];
for (int i = 0; i < 26; i++)
{
char secretItem = secretMessage[i];
int index = Array.IndexOf(alphabet, secretItem);
int letterPosition = (index += 3 % 26);
char encryptedLetter = alphabet[letterPosition];
encryptedMessage[i] = encryptedLetter;
}
string superSecretMessage = String.Join("", encryptedMessage);
}
}
}
and the error message is a unhandled exception.
It will let me type in my secret message, but once I do i get the error.