Closed kunting tulong sa magaling mag c# jan?

[network phantom]

c# po yan.

 

[secretaccountofficial]

easy. array lang yan. find value at specified index array

 

[network phantom]

easy. array lang yan. find value at specified index array

na code ko na po yung problem ko po is yung sa number nalang

 

[42697262]

na code ko na po yung problem ko po is yung sa number nalang

source code mo nga?

 

[network phantom]

using System;
using System.Linq;

namespace project
{
class Program
{
static void Main(string[] args)
{
Console.Write("Enter letter:");
string text = Console.ReadLine();
string cipherText = Encipher(text, 8);
string plainText = Decipher(cipherText, 8);
string Upp = cipherText.ToUpper();

Console.WriteLine($"Encrypt plain letter: {Upp}");
}

static string Encipher(string str, int num)
{
var res = str.Select(c =>
{
if (!char.IsLetter(c)) return c;
char offset = char.IsUpper(c) ? 'A' : 'a';
return (char)((((c + num) - offset) % 26) + offset);
});

return string.Concat(res);
}

static string Decipher(string input, int key)
{
return Encipher(input, 26 - key);
}
}
}

 

[network phantom]

source code mo nga?

 

[network phantom]

source code mo nga?

 

[42697262]

u can try doing them as arrays for numbser

 

[network phantom]

easy. array lang yan. find value at specified index array

pwede po ba patulong ? using array pwede din daw looping

 

[secretaccountofficial]

pwede po ba patulong ? using array pwede din daw looping

create two arrays. one for plaintext and one is for encrypted.

 

[mrHazan]

Pag-aralan mabuti ang code.
This might not be the most efficient code but the outputs are correct.
Maganda dito pwede mo din iask ang user to replace 8. Para hindi 8 lang ang ciphering. Pwede any integer.

using System;

public class Program
{
    static string letters = "abcdefghijklmnopqrstuvwxyz";
    static string numbers = "0123456789";
    static string inputText = "";
    public static void Main()
    {
        Console.Write("Enter text: ");
        inputText = Console.ReadLine();
        Console.WriteLine("Encrypted: " + Cipher(inputText.ToLower(), 8));
        Console.Write("Enter text to decrypt: ");
        inputText = Console.ReadLine();
        Console.WriteLine("Decrypted: " + Cipher(inputText.ToLower(), -8));
    }

    public static string Cipher(string text, int num)
    {
        string cipheredText = "";
        int numMove = 0;
        for (int i = 0; i < text.Length; i++)
        {
            if (Char.IsWhiteSpace(text[i]))
            {
                cipheredText += ' ';
            }
            else
            {
                if (Char.IsNumber(text[i]))
                {
                    numMove = numbers.IndexOf(text[i]) + num;
                    if (numMove > numbers.Length - 1)
                    {
                        numMove = numMove % numbers.Length;
                    }
                    else if (numMove < 0)
                    {
                        while (numMove < 0)
                        {
                            numMove = numbers.Length + numMove;
                        }
                    }

                    cipheredText += numbers[numMove];
                }
                else
                {
                    numMove = letters.IndexOf(text[i]) + num;
                    if (numMove > letters.Length - 1)
                    {
                        numMove = numMove % letters.Length;
                    }
                    else if (numMove < 0)
                    {
                        while (numMove < 0)
                        {
                            numMove = letters.Length + numMove;
                        }
                    }
                    cipheredText += letters[numMove];
                }
            }
        }

        if (num < 0)
        {
            return cipheredText;
        }
        else
        {
            return cipheredText.ToUpper();
        }
    }
}

 

[pixkit]

What is the problem? How to write the code or you don't know the algorithm?

State the algorithm and I will code it for you. If it's the algorithm, then sorry I can't spoon fed that to you.

 

[network phantom]

Pag-aralan mabuti ang code.
This might not be the most efficient code but the outputs are correct.
Maganda dito pwede mo din iask ang user to replace 8. Para hindi 8 lang ang ciphering. Pwede any integer.

using System;

public class Program
{
    static string letters = "abcdefghijklmnopqrstuvwxyz";
    static string numbers = "0123456789";
    static string inputText = "";
    public static void Main()
    {
        Console.Write("Enter text: ");
        inputText = Console.ReadLine();
        Console.WriteLine("Encrypted: " + Cipher(inputText.ToLower(), 8));
        Console.Write("Enter text to decrypt: ");
        inputText = Console.ReadLine();
        Console.WriteLine("Decrypted: " + Cipher(inputText.ToLower(), -8));
    }

    public static string Cipher(string text, int num)
    {
        string cipheredText = "";
        int numMove = 0;
        for (int i = 0; i < text.Length; i++)
        {
            if (Char.IsWhiteSpace(text[i]))
            {
                cipheredText += ' ';
            }
            else
            {
                if (Char.IsNumber(text[i]))
                {
                    numMove = numbers.IndexOf(text[i]) + num;
                    if (numMove > numbers.Length - 1)
                    {
                        numMove = numMove % numbers.Length;
                    }
                    else if (numMove < 0)
                    {
                        while (numMove < 0)
                        {
                            numMove = numbers.Length + numMove;
                        }
                    }

                    cipheredText += numbers[numMove];
                }
                else
                {
                    numMove = letters.IndexOf(text[i]) + num;
                    if (numMove > letters.Length - 1)
                    {
                        numMove = numMove % letters.Length;
                    }
                    else if (numMove < 0)
                    {
                        while (numMove < 0)
                        {
                            numMove = letters.Length + numMove;
                        }
                    }
                    cipheredText += letters[numMove];
                }
            }
        }

        if (num < 0)
        {
            return cipheredText;
        }
        else
        {
            return cipheredText.ToUpper();
        }
    }
}

maraming salamat po

 

[network phantom]

What is the problem? How to write the code or you don't know the algorithm?

State the algorithm and I will code it for you. If it's the algorithm, then sorry I can't spoon fed that to you.

my problem is the prof want us to use only string, array and loop

 

[network phantom]

my problem is the prof want us to use only string, array and loop. the problem while he is teaching is the language barrier. he is not good in teaching using english

 

[pixkit]

my problem is the prof want us to use only string, array and loop

So you are not allowed to use arithmetic?

 

[network phantom]

So you are not allowed to use arithmetic?

yes we are allowed to use arithmetic

 

[pixkit]

Unfortunately I think the core problem here for you is don't know the algorithm for the numbers. You can only start coding if you understand the algorithm

So basically to encrypt:
1. Get the next character from the input string
2. Convert to digit
3. Subtract 2 from the digit
4. If digit is less than 0, add 10 so it loops back to single digit
5. Convert to string and append to the final output

To decrypt:
1. Get the next character from the input string
2. Convert to digit
3. Add 2 to the digit (reverse of encrypt)
4. If digit is greater than 9, subtract 10 so it loops back to single digit
5. Convert to string and append to the final output

Here's a REPL for your reference
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Here's the source (I highly suggest you check the REPL link above instead):

using System;

public class Program {
  static string input = "";

  public static void Main() {
    Console.Write("Enter plaintext numbers: ");
    input = Console.ReadLine();
    Console.WriteLine("encrypted numbers: " + Encrypt(input));

    Console.Write("Enter encrypted numbers: ");
    input = Console.ReadLine();
    Console.WriteLine("Plaintext numbers: " + Decrypt(input));
  }

  public static string Encrypt(string input) {
    string encrypted = "";
    foreach (char c in input) {
      int encoded = int.Parse(c.ToString()) - 2;
      encoded = encoded < 0 ? encoded + 10 : encoded;
      encrypted += encoded.ToString();
    }
    return encrypted;
  }

  public static string Decrypt(string input) {
    string decrypted = "";
    foreach (char c in input) {
      int decoded = int.Parse(c.ToString()) + 2;
      decoded = decoded > 9 ? decoded - 10 : decoded;
      decrypted += decoded.ToString();
    }
    return decrypted;
  }
}

Sample output:

Mono C# compiler version 4.6.2.0
 mcs -out:main.exe main.cs
 mono main.exe
Enter plaintext numbers: 0123456789
encrypted numbers: 8901234567
Enter encrypted numbers: 8901234567
Plaintext numbers: 0123456789

 

[pixkit]

Also try to avoid too many if-else or nested if-else statements