1 class Program{ 2 3 static void Main(string[] args){ 4 5 Console.WriteLine(Change(8)); 6 7 } 8 9 private static int Change(int age){ 10 11 12 if(age==1){ 13 14 return 10; 15 16 17 }else{ 18 19 return Change(age-1)+2; 20 21 22 23 } 24 25 26 } 27 28 29 }