Create a C# program that makes a copy of a text file but encrypted.
Add the characters of each letter 13 times to encrypt the contents of the text file.
public class FileEncrypter
public static void Main(string args)
string inputFileName = "input.txt";
string outputFileName = "output.txt";
string contents = File.ReadAllText(inputFileName);
string cipher = string.Empty;
byte key = 13;
foreach (char letter in contents)
cipher += (char)(letter + key);
Practice C# anywhere with the free app for Android devices.
Learn C# at your own pace, the exercises are ordered by difficulty.
Own and third party cookies to improve our services. If you go on surfing, we will consider you accepting its use.