C#

public class Citizen
{
  public string Ssn;
  public int Age; 
  
  public virtual void GetDetails()
  {
     SSN = GetInput("Please enter the citizen's Social Security number: ");
     Age = GetAge();
  }

  public virtual void DisplayInfo()
  {
    Console.WriteLine("Citizen's Information:");
    Console.WriteLine("SSN: {0}", Ssn);
    Console.WriteLine("Age: {0}{1}", Age, Environment.NewLine);
  }

  protected string GetInput(string message)
  {
    Console.WriteLine(message);
    return Console.ReadLine();
  }

  private void GetAge()
  {
     bool success = false;
     int age;
     while (!success)
     {
       string tempAge = GetInput("Please enter the citizen's age: ");
       bool success = int.TryParse(tempAge, age);
       if (!success)
       {
         Console.WriteLine("Unfortunately, you did not enter a valid integer (or whatever message you like here");
       }
     }
  }
}

public class Employee : Citizen
{
  public string Name;
  public string Id;

  public override void GetDetails()
  {
    base.GetDetails();

    Name = GetInput("Please enter the employee's name:");
    Id = GetInput("Please enter the employee's id:");
  }

  public override void DisplayInfo()
  {
    base.DisplayInfo();
    Console.WriteLine("Employee's name: {0}", Name);
    WriteLine("Employee's id: {0}", Id);
  }
}

Söderlund wrote:

I´m coding in C#, thats why i posted it on this forum