View difference between Paste ID: Y72LDmbJ and dU9BGYGn

 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()
+     static void Main()
     {
-        Console.Write("Please enter the number:\t");
+
-        short number = short.Parse(Console.ReadLine());
+        short number = Convert.ToInt16(Console.ReadLine());
-        int digitA = number % 10;
+        short digitA = Convert.ToInt16( number % 10);
-        int digitB = (number / 10) % 10;
+        short digitB = Convert.ToInt16((number / 10) % 10);
-        int digitC = (number / 100) % 10;
+        short digitC = Convert.ToInt16((number / 100) % 10);
-        int digitD = number / 1000;
+        short digitD = Convert.ToInt16( number / 1000);
-        int exchangeSecondAndThird = digitD * 1000 + digitB * 100 + digitC * 10 + digitA;
+        short exchangeSecondAndThird = Convert.ToInt16(digitD * 1000 + digitB * 100 + digitC * 10 + digitA);
-        int digitsSum = digitA + digitB + digitC + digitD;
+        short digitsSum = Convert.ToInt16(digitA + digitB + digitC + digitD);
-        int reverseNumber;
+        short reverseNumber;
-        int lastDigitInFront;
+        short lastDigitInFront;
         Console.Clear();
         Console.WriteLine("\n\n-------------------------------------------------------------------------------");
-            Console.WriteLine("The number is : {0}", number);
+        Console.WriteLine("| number | sum of digits | reversed | last digit in front | exch second-third |");
-            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 !");
+            if (digitsSum > 10)
-            Console.WriteLine("After exchange of second and third digit: {0}\n", exchangeSecondAndThird);
+            {
                 Console.WriteLine("|  {0}  |       {1}      | last is 0|      last is 0      |       {2}        |", number, digitsSum, exchangeSecondAndThird);
 
             }
-            reverseNumber = digitD + digitC * 10 + digitB * 100 + digitA * 1000;
+            else
-            lastDigitInFront = digitA * 1000 + digitD * 100 + digitC * 10 + digitB;
+            {
-            Console.WriteLine("The number is : {0}", number);
+                Console.WriteLine("|  {0}  |       {1}       | last is 0|      last is 0      |       {2}        |", number, digitsSum, exchangeSecondAndThird);
-            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);
+
             reverseNumber = Convert.ToInt16((digitD + digitC * 10 + digitB * 100 + digitA * 1000));
             lastDigitInFront = Convert.ToInt16((digitA * 1000 + digitD * 100 + digitC * 10 + digitB));
             if (digitsSum < 10)
             {
                 Console.WriteLine("|  {0}  |       {1}       |   {2}   |         {3}        |        {4}       |", number, digitsSum, reverseNumber, lastDigitInFront, exchangeSecondAndThird);
             }
             else
             {
                 Console.WriteLine("|  {0}  |       {1}      |   {2}   |         {3}        |        {4}       |", number, digitsSum, reverseNumber, lastDigitInFront, exchangeSecondAndThird);
             }
             Console.WriteLine("-------------------------------------------------------------------------------");
         }
         Console.Read();
     }
 }