OperatorsExpressionsAndStatements - Task 6

using System;
/*
*Write a program that takes as input a four-digit number in format abcd (e.g. 2011) and performs the following:
* Calculates the sum of the digits (in our example 2+0+1+1 = 4).
* Prints on the console the number in reversed order: dcba (in our example 1102).
* Puts the last digit in the first position: dabc (in our example 1201).
* Exchanges the second and the third digits: acbd (in our example 2101).
* The number has always exactly 4 digits and cannot start with 0
*/
class FourDigitsNumber
{
    static void Main()
    {
        Console.Write("Please enter the number:\t");
        short number = short.Parse(Console.ReadLine());
        int digitA = number % 10;
        int digitB = (number / 10) % 10;
        int digitC = (number / 100) % 10;
        int digitD = number / 1000;
        int exchangeSecondAndThird = digitD * 1000 + digitB * 100 + digitC * 10 + digitA;
        int digitsSum = digitA + digitB + digitC + digitD;
        int reverseNumber;
        int lastDigitInFront;
        if (digitA == 0)
        {
            Console.WriteLine("The number is : {0}", number);
            Console.WriteLine("The sum of the digits is : {0}", digitsSum);
            Console.WriteLine("Reversed number : The last digit is 0 !");
            Console.WriteLine("Put last digit in front: The last digit is 0 !");
            Console.WriteLine("After exchange of second and third digit: {0}\n", exchangeSecondAndThird);
        }
        else
        {
            reverseNumber = digitD + digitC * 10 + digitB * 100 + digitA * 1000;
            lastDigitInFront = digitA * 1000 + digitD * 100 + digitC * 10 + digitB;
            Console.WriteLine("The number is : {0}", number);
            Console.WriteLine("The sum of the digits is : {0}", digitsSum);
            Console.WriteLine("Reversed number : {0}",reverseNumber);
            Console.WriteLine("Put last digit in front: {0}",lastDigitInFront);
            Console.WriteLine("After exchange of second and third digit: {0}\n", exchangeSecondAndThird);

        }
    }
}