using System;

public class Program

{

    public static void Main()

    {

        int [] numbers = new int[10];

        int x, ctr=0, divisorForHex = 16;

​

        Console.WriteLine("Decimal to Hexadecimal Conversion.");

        Console.Write("Enter a number in a Decimal Form: ");

        x = Int32.Parse(Console.ReadLine());

        while (true) {

            if (x == 0) {

                break;

            }

            if (x % divisorForHex == 10) {

                numbers[ctr] = 'A';

            } else if (x % divisorForHex == 11) {

                numbers[ctr] = 'B';

            } else if (x % divisorForHex == 12) {

                numbers[ctr] = 'C';

            } else if (x % divisorForHex == 13){

                numbers[ctr] = 'D';

            } else if (x % divisorForHex == 14){

                numbers[ctr] = 'E';

            } else if (x % divisorForHex == 15){

                numbers[ctr] = 'F';

            } else {

                numbers[ctr] = x % divisorForHex;               

            }

            x /= 16;

            ctr += 1;

        }

        Console.Write("Hexadecimal Equivalent: ");

        for (int i = ctr - 1; i >= 0; i--) {

            // Ascii Value, A = 65, B = 66, C = 67, D = 68, E = 69, F = 70

            if (numbers[i] == 65) {

                Console.Write("A");

            } else if (numbers[i] == 66) {

                Console.Write("B");

            } else if (numbers[i] == 67) {

                Console.Write("C");

            } else if (numbers[i] == 68) {

                Console.Write("D");

            } else if (numbers[i] == 69) {

                Console.Write("E");

            } else if (numbers[i] == 70) {

                Console.Write("F");

            } else {

                Console.Write(numbers[i]);

            }

        }

    }

}