using System;

public class Program

{

    public static void Main()

    {

        String []n = new String[10];

        int x, ctr=0;

​

        Console.WriteLine("Decimal to Hexadecimal Conversion." + "\n=======================================================");

        Console.Write("\nEnter a number in Decimal number system: ");

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

        int val = 0;

        while(x!=0){

            val = x % 16;

            if (val == 10)

                n[ctr] = "A";

            else if (val == 11)

                n[ctr] = "B";

            else if (val == 12)

                n[ctr] = "C";

            else if (val == 13)

                n[ctr] = "D";

            else if (val == 14)

                n[ctr] = "E";

            else if (val == 15)

                n[ctr] = "F";

            else

                n[ctr] = val.ToString();

            x = x / 16;

            ctr++;

        }

        ctr--;

        Console.Write("\nEquivalent Hexadecimal number: ");

        while(ctr>=0){

            Console.Write(n[ctr]);

            ctr--;

        }

    }

}