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  1. using System;
  2.  
  3. public class Test
  4. {
  5.  
  6. class Person
  7. {
  8. public int age;
  9.  
  10. public Person() {}
  11. public Person(int age)
  12. {
  13. this.age = age;
  14. }
  15. }
  16.  
  17. class Customer : Person
  18. {
  19. public Customer(int age)
  20. {
  21. this.age += age;
  22. }
  23. }
  24.  
  25. public static void Main()
  26. {
  27. var c = new Customer(2);
  28. Console.WriteLine(c.age);
  29. }
  30. }
Success #stdin #stdout 0.02s 28376KB
stdin
Standard input is empty
stdout
2