View difference between Paste ID: apT8ARA4 and FWg2m8Jv

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-    class Program
+class AgeAfterTenYears
 {
-        static void Main(string[] args)
+    static void Main(string[] args)
     {
-            Console.Write("Enter your birthday: ");
+        Console.Write("Enter your birthday: ");
-            string birsthdayStr = Console.ReadLine();
+        string birsthdayStr = Console.ReadLine();
-            DateTime birthday;
+        DateTime birthday;
-            int currentYear = DateTime.Now.Year;
+        int currentYear = DateTime.Now.Year;
-            int yearOfBirth;
+        int yearOfBirth;
-            int ageNow;
+        int ageNow;
-            int ageAfterTenYears;
+        int ageAfterTenYears;
-            bool birthdayCorrectFormat = DateTime.TryParse(birsthdayStr, out birthday);
+        bool birthdayCorrectFormat = DateTime.TryParse(birsthdayStr, out birthday);
-            if (birthdayCorrectFormat)
+        if (birthdayCorrectFormat)
         {
-                yearOfBirth = birthday.Year;
+            yearOfBirth = birthday.Year;
             DateTime birthdayThisYeas = new DateTime(currentYear, birthday.Month, birthday.Day);
-                ageAfterTenYears = ageNow + 10;
+            if (birthdayThisYeas > DateTime.Today)
-                Console.WriteLine("Your age after 10 years: {0}", ageAfterTenYears);
+
                 ageNow = (currentYear - yearOfBirth) - 1;
             }
             else
-                Console.WriteLine("Wrong format of birthday.");
+
                 ageNow = currentYear - yearOfBirth;
             }
-    }
+            ageAfterTenYears = ageNow + 10;
             Console.WriteLine("Your age now: {0}. Your age after 10 years: {1}", ageNow, ageAfterTenYears);
         }
         else
         {
             Console.WriteLine("Wrong format of birthday.");
         }
     }
 }