using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("Is interactive? : " + Environment.UserInteractive);
    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("Machine name : " + Environment.MachineName);

    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("Domain Name : " + Environment.UserDomainName);

    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("User Name : " + Environment.UserName);
    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("CLR Version : " + Environment.Version);
    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("OS PlatformID : " + Environment.OSVersion.Platform);
        Console.WriteLine("OS Major Version : " + Environment.OSVersion.Version.Major);
        Console.WriteLine("OS Minor Version : " + Environment.OSVersion.Version.Minor);

    }
}

   
     

   
  

using System;

class MainClass {
    public static void Main() {
        Console.WriteLine("Command line : " + Environment.CommandLine);
    }
}