//AGOSTO, JOAN CHRISTINE

//CCP 1103 - ITBC

//NUMBER TO WORDS

​

using System;

public class Program

{

    public static void Main()

    {

        string input;

        int firstNumber;

        int onesDigit;

        int tensDigit;

        int hundredsDigit;

​

        Console.Write("Enter a number: ");

        input = Console.ReadLine();

​

        if (Int32.TryParse(input, out firstNumber) == true)

        {

          if (firstNumber > 0 && firstNumber < 1001)

          {

             if (firstNumber == 1000)

              {

                Console.Write("One Thousand");

              }

              else if (firstNumber == 0)

              {

                Console.Write("Zero");

              }

​

                    if (firstNumber >= 100)

                    {

                        hundredsDigit = firstNumber / 100;

                        firstNumber = firstNumber % 100;

​

                        switch (hundredsDigit)

                        {

                            case 1:

                                Console.Write("One Hundred" + " ");

                                break;

                            case 2:

                                Console.Write("Two Hundred" + " ");

                                break;

                            case 3:

                                Console.Write("Three Hundred" + " ");

                                break;

                            case 4:

                                Console.Write("Four Hundred" + " ");

                                break;

                            case 5:

                                Console.Write("Five Hundred" + " ");

                                break;

                            case 6:

                                Console.Write("Six Hundred" + " ");

                                break;

                            case 7:

                                Console.Write("Seven Hundred" + " ");

                                break;

                            case 8:

                                Console.Write("Eight Hundred" + " ");

                                break;

                            case 9:

                                Console.Write("Nine Hundred" + " ");

                                break;

                        }

                    }

​

                    if (firstNumber > 9)

                    {

                        tensDigit = firstNumber / 10;

                        firstNumber = firstNumber % 10;

​

                        switch (tensDigit)

                        {

                            case 1:

                                if (firstNumber > 0)

                                {

                                   tensDigit = firstNumber / 1;

                                    switch (tensDigit)

                                    {

                                        case 1:

                                            Console.Write("Eleven" + " ");

                                            firstNumber = firstNumber - 1;

                                            break;

                                        case 2:

                                            Console.Write("Twelve" + " ");

                                            firstNumber = firstNumber - 2;

​

                                            break;

                                        case 3:

                                            Console.Write("Thirteen" + " ");

                                            firstNumber = firstNumber - 3;

​

                                            break;

                                        case 4:

                                            Console.Write("Fourteen" + " ");

                                            firstNumber = firstNumber - 4;

                                            break;

                                        case 5:

                                            Console.Write("Fifteen" + " ");

                                            firstNumber = firstNumber - 5;

                                            break;

                                        case 6:

                                            Console.Write("Sixteen" + " ");

                                            firstNumber = firstNumber - 6;

                                            break;

                                        case 7:

                                            Console.Write("Seventeen" + " ");

                                            firstNumber = firstNumber - 7;

                                            break;

                                        case 8:

                                            Console.Write("Eighteen" + " ");

                                            firstNumber = firstNumber - 8;

                                            break;

                                        case 9:

                                            Console.Write("Nineteen" + " ");

                                            firstNumber = firstNumber - 9;

                                            break;

                                    }

                                }

                                else

                                {

                                    Console.Write("Ten" + " ");

                                }

                                break;

                            case 2:

                                Console.Write("Twenty" + " ");

                                break;

                            case 3:

                                Console.Write("Thirty" + " ");

                                break;

                            case 4:

                                Console.Write("Fourty" + " ");

                                break;

                            case 5:

                                Console.Write("Fifty" + " ");

                                break;

                            case 6:

                                Console.Write("Sixty" + " ");

                                break;

                            case 7:

                                Console.Write("Seventy" + " ");

                                break;

                            case 8:

                                Console.Write("Eighty" + " ");

                                break;

                            case 9:

                                Console.Write("Ninety" + " ");

                                break;

                        }

​

                    }

                    onesDigit = firstNumber;

                    if (firstNumber > 0)

                    {

                        switch (onesDigit)

                        {

                            case 1:

                                Console.Write("One");

                                break;

                            case 2:

                                Console.Write("Two");

                                break;

                            case 3:

                                Console.Write("Three");

                                break;

                            case 4:

                                Console.Write("Four");

                                break;

                            case 5:

                                Console.Write("Five");

                                break;

                            case 6:

                                Console.Write("Six");

                                break;

                            case 7:

                                Console.Write("Seven");

                                break;

                            case 8:

                                Console.Write("Eight");

                                break;

                            case 9:

                                Console.Write("Nine");

                                break;

                        }

​

                    }

​

                }

                else

                {

                    Console.WriteLine("Invalid input! only digits from 0-1000 are accepted");

                }

            }

            else

            {

                Console.WriteLine("Invalid pls enter a numeric value");

    }

  }

}