Cryptography lab | C# Online Compiler

Cryptography lab by Harpreet kaurr

using System;
					
public class Program
{
	static public string Encrypt(string a)
		 {   char[] temp = a.ToCharArray();
        for (int i = 0; i < a.Length; i++)
        {
            if (temp[i] == 'A')
                temp[i] = 'N';
			else if (temp[i] == 'B')
				 temp[i] = 'O';
			else if (temp[i] == 'C')
				temp[i] = 'P';
			else if (temp[i] == 'D')
				temp[i] = 'Q';
			else if (temp[i] == 'E')
				temp[i] = 'R';
			else if (temp[i] == 'F')
				temp[i] = 'S';
			else if (temp[i] == 'G')
				temp[i] = 'T';
			else if (temp[i] == 'H')
				temp[i] = 'U';
			else if (temp[i] == 'I')
				temp[i] = 'V';
			else if (temp[i] == 'J')
				temp[i] = 'W';
			else if (temp[i] == 'K')
				temp[i] = 'X';
			else if (temp[i] == 'L')
				temp[i] = 'Y';
			else if (temp[i] == 'M')
				temp[i] = 'Z';
			else if (temp[i] == 'N')
				temp[i] = 'A';
			else if (temp[i] == 'O')
				temp[i] = 'B';
			else if (temp[i] == 'P')
				temp[i] = 'C';
			else if (temp[i] == 'Q')
				temp[i] = 'D';
			else if (temp[i] == 'R')
				temp[i] = 'E';
			else if (temp[i] == 'S')
				temp[i] = 'F';
			else if (temp[i] == 'T')
				temp[i] = 'G';
			else if (temp[i] == 'U')
				temp[i] = 'H';
			else if (temp[i] == 'V')
				temp[i] = 'I';
			else if (temp[i] == 'W')
				temp[i] = 'J';
			else if (temp[i] == 'X')
				temp[i] = 'K';
			else if (temp[i] == 'Y')
				temp[i] = 'L';
			else if (temp[i] == 'Z')
				temp[i] = 'M';
        }
        string b = new string(temp);
          return b;
			  
        }
	
	static public string Decrypt(string a)
		 {   char[] temp = a.ToCharArray();
        for (int i = 0; i < a.Length; i++)
        {
			if (temp[i] == 'N')
                temp[i] = 'A';
			else if (temp[i] == 'O')
				 temp[i] = 'B';
			else if (temp[i] == 'P')
				temp[i] = 'O';
			else if (temp[i] == 'Q')
				temp[i] = 'D';
			else if (temp[i] == 'R')
				temp[i] = 'E';
			else if (temp[i] == 'S')
				temp[i] = 'F';
			else if (temp[i] == 'T')
				temp[i] = 'G';
			else if (temp[i] == 'U')
				temp[i] = 'H';
			else if (temp[i] == 'V')
				temp[i] = 'I';
			else if (temp[i] == 'W')
				temp[i] = 'J';
			else if (temp[i] == 'X')
				temp[i] = 'K';
			else if (temp[i] == 'Y')
				temp[i] = 'L';
			else if (temp[i] == 'Z')
				temp[i] = 'M';
			else if (temp[i] == 'A')
				temp[i] = 'N';
			else if (temp[i] == 'B')
				temp[i] = 'O';
			else if (temp[i] == 'C')
				temp[i] = 'P';
			else if (temp[i] == 'D')
				temp[i] = 'Q';
			else if (temp[i] == 'E')
				temp[i] = 'R';
			else if (temp[i] == 'F')
				temp[i] = 'S';
			else if (temp[i] == 'G')
				temp[i] = 'T';
			else if (temp[i] == 'H')
				temp[i] = 'U';
			else if (temp[i] == 'I')
				temp[i] = 'V';
			else if (temp[i] == 'J')
				temp[i] = 'W';
			else if (temp[i] == 'K')
				temp[i] = 'X';
			else if (temp[i] == 'L')
				temp[i] = 'Y';
			else if (temp[i] == 'M')
				temp[i] = 'Z';
        }
        string b = new string(temp);
          return b;
        }
	
	public static void Main()
	{
		string ans = "loop";
		while (ans != "Q" && ans != "q")
		{
		start:
		Console.WriteLine("Would you like to encrypt or decrypt the message?");
		Console.WriteLine("Enter E for encrypting or D for decrypting");
		string choice = Console.ReadLine();
		if (choice == "E" || choice == "e")
		{
			Console.WriteLine("What would you like to encrypt? (Write in capital letters)");
			string encryption = Console.ReadLine();
			Console.WriteLine(Encrypt(encryption));
		}
		else if (choice == "D" || choice == "d")
		{
			Console.WriteLine("What would you like to decrypt? (Write in Capital letters)");
			string decryption = Console.ReadLine();
			Console.WriteLine(Decrypt(decryption));
		}
		else 
		{Console.WriteLine("You have an error.");
		 goto start;
		}
			Console.WriteLine("Would you like to run the program again? press q to quit or enter to continue.");
			ans = Console.ReadLine();
			Console.Clear();
		}
	}
}

 
using System;
                    
public class Program
{
    static public string Encrypt(string a)
         {   char[] temp = a.ToCharArray();
        for (int i = 0; i < a.Length; i++)
        {
            if (temp[i] == 'A')
                temp[i] = 'N';
            else if (temp[i] == 'B')
                 temp[i] = 'O';
            else if (temp[i] == 'C')
                temp[i] = 'P';
            else if (temp[i] == 'D')
                temp[i] = 'Q';
            else if (temp[i] == 'E')
                temp[i] = 'R';
            else if (temp[i] == 'F')
                temp[i] = 'S';
            else if (temp[i] == 'G')
                temp[i] = 'T';
            else if (temp[i] == 'H')
                temp[i] = 'U';
            else if (temp[i] == 'I')
                temp[i] = 'V';
            else if (temp[i] == 'J')
                temp[i] = 'W';
            else if (temp[i] == 'K')
                temp[i] = 'X';
            else if (temp[i] == 'L')
                temp[i] = 'Y';
            else if (temp[i] == 'M')
                temp[i] = 'Z';
            else if (temp[i] == 'N')
                temp[i] = 'A';
            else if (temp[i] == 'O')
                temp[i] = 'B';
            else if (temp[i] == 'P')
                temp[i] = 'C';
            else if (temp[i] == 'Q')
                temp[i] = 'D';
            else if (temp[i] == 'R')
                temp[i] = 'E';
            else if (temp[i] == 'S')
                temp[i] = 'F';
            else if (temp[i] == 'T')
                temp[i] = 'G';
            else if (temp[i] == 'U')
                temp[i] = 'H';
            else if (temp[i] == 'V')
                temp[i] = 'I';
            else if (temp[i] == 'W')
                temp[i] = 'J';
            else if (temp[i] == 'X')
                temp[i] = 'K';
            else if (temp[i] == 'Y')
                temp[i] = 'L';
            else if (temp[i] == 'Z')
                temp[i] = 'M';
        }
        string b = new string(temp);
          return b;
              
        }
    
    static public string Decrypt(string a)
         {   char[] temp = a.ToCharArray();
        for (int i = 0; i < a.Length; i++)
        {
            if (temp[i] == 'N')
                temp[i] = 'A';
            else if (temp[i] == 'O')
                 temp[i] = 'B';
            else if (temp[i] == 'P')
                temp[i] = 'O';
            else if (temp[i] == 'Q')
                temp[i] = 'D';
            else if (temp[i] == 'R')
                temp[i] = 'E';
            else if (temp[i] == 'S')
                temp[i] = 'F';
            else if (temp[i] == 'T')
                temp[i] = 'G';
            else if (temp[i] == 'U')
                temp[i] = 'H';
            else if (temp[i] == 'V')
                temp[i] = 'I';
            else if (temp[i] == 'W')
                temp[i] = 'J';
            else if (temp[i] == 'X')
                temp[i] = 'K';
            else if (temp[i] == 'Y')
                temp[i] = 'L';
            else if (temp[i] == 'Z')
                temp[i] = 'M';
            else if (temp[i] == 'A')
                temp[i] = 'N';
            else if (temp[i] == 'B')
                temp[i] = 'O';
            else if (temp[i] == 'C')
                temp[i] = 'P';
            else if (temp[i] == 'D')
                temp[i] = 'Q';
            else if (temp[i] == 'E')
                temp[i] = 'R';
            else if (temp[i] == 'F')
                temp[i] = 'S';
            else if (temp[i] == 'G')
                temp[i] = 'T';
            else if (temp[i] == 'H')
                temp[i] = 'U';
            else if (temp[i] == 'I')
                temp[i] = 'V';
            else if (temp[i] == 'J')
                temp[i] = 'W';
            else if (temp[i] == 'K')
                temp[i] = 'X';
            else if (temp[i] == 'L')
                temp[i] = 'Y';
            else if (temp[i] == 'M')
                temp[i] = 'Z';
        }
        string b = new string(temp);
          return b;
        }
    
    public static void Main()
    {
        string ans = "loop";
        while (ans != "Q" && ans != "q")
        {
        start:
        Console.WriteLine("Would you like to encrypt or decrypt the message?");
        Console.WriteLine("Enter E for encrypting or D for decrypting");
        string choice = Console.ReadLine();
        if (choice == "E" || choice == "e")
        {
            Console.WriteLine("What would you like to encrypt? (Write in capital letters)");
            string encryption = Console.ReadLine();
            Console.WriteLine(Encrypt(encryption));
        }
        else if (choice == "D" || choice == "d")
        {
            Console.WriteLine("What would you like to decrypt? (Write in Capital letters)");
            string decryption = Console.ReadLine();
            Console.WriteLine(Decrypt(decryption));
        }
        else 
        {Console.WriteLine("You have an error.");
         goto start;
        }
            Console.WriteLine("Would you like to run the program again? press q to quit or enter to continue.");
            ans = Console.ReadLine();
            Console.Clear();
        }
    }
}

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jedno sto dvacet tři čtyři sta padesát šest CZK 0/100

Last Run:	12:37:07 am
Compile:	0.231s
Execute:	0s
Memory:	0b
CPU:	0.031s

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