C#

using System;

public class Citizen
{
    private string ssn;
    private string age;

    public string SSN
    {
        get { return ssn; }
        set { ssn = value; }
    }
    public string Age
    {
        get { return age; }
        set { age = value; }
    }
    public void DisplayCitizenInfo()
    {
        Console.WriteLine("Citizen's Information:");
        Console.WriteLine("SSN: {0}", ssn);
        Console.WriteLine("Age: {0}\n", age);
    }
    public Citizen()
    {
        Console.WriteLine("Please enter the citizens Social Security number: ");
        SSN = Console.ReadLine();
        Console.WriteLine("Please enter the citizens age: ");
        Age = Console.ReadLine();
    }
}
    
public class Employee : Citizen
{
    private string name;
    private string id;

    public string Name
    {
        get { return name; }
        set { name = value; }
    }
    public string Id
    {
        get { return id; }
        set { id = value; }
    }

    public void DisplayInfo()
    {
        Console.WriteLine("Employee's name: {0}", name);
        Console.WriteLine("Employee's id: {0}", id);
    }
}
    
class MyClass
{
    static void Main(string[] args)
    {
        // Create object:
        Employee emp = new Employee();

        // Read name and id:
        Console.Write("Please enter the employee's name: ");
        emp.Name = Console.ReadLine();

        Console.Write("Please enter the employee's id: ");
        emp.Id = Console.ReadLine();

        // Display information:
        emp.DisplayInfo();
    }
}

I am working on automatically find which webcam is working properly on my machine. Condition: 1) If you have two webcam one working and another one is not working. And the not working is in 0th position so is comes first so code taking 0th position.

2) If you installed a virtual webcam and integrated webcam already present so how to identify that which is a virtual or working webcam.