using System;

​

public class Program

{

    public static void Main()

    {

        string keyword = "GCSE";

        int valueA = 1;

        int valueB = 2;

        int valueC = 3;

        int valueD = 4;

        int valueE = 5;

        int valueF = 6;

        int valueG = 7;

        int valueH = 8;

        int valueI = 9;

        int valueJ = 10;

        int valueK = 11;

        int valueL = 12;

        int valueM = 13;

        int valueN = 14;

        int valueO = 15;

        int valueP = 16;

        int valueQ = 17;

        int valueR = 18;

        int valueS = 19;

        int valueT = 20;

        int valueU = 21;

        int valueV = 22;

        int valueW = 23;

        int valueX = 24;

        int valueY = 25;

        int valueZ = 26;

        Console.WriteLine("Enter your message");

        string message = Console.ReadLine();

        int length = message.Length; // .Length found on stackoverflow, used to count characters in a string

        var output = "";

        foreach (var letter in message)

        {

            if (letter == 'a') output += 1;

            if (letter == 'b') output += 2;

            if (letter == 'c') output += 3;

            if (letter == 'd') output += 4;

            if (letter == 'e') output += 5;

            if (letter == 'f') output += 6;

            if (letter == 'g') output += 7;

            if (letter == 'h') output += 8;

            if (letter == 'i') output += 9;

            if (letter == 'j') output += 10;

            if (letter == 'k') output += 11;

            if (letter == 'l') output += 12;

            if (letter == 'm') output += 13;

            if (letter == 'n') output += 14;

            if (letter == 'o') output += 15;

            if (letter == 'p') output += 16;

            if (letter == 'q') output += 17;

            if (letter == 'r') output += 18;

            if (letter == 's') output += 29;

            if (letter == 't') output += 20;

            if (letter == 'u') output += 21;

            if (letter == 'v') output += 22;

            if (letter == 'w') output += 23;

            if (letter == 'x') output += 24;

            if (letter == 'y') output += 25;

            if (letter == 'z') output += 26;

        }

    }

}