using System;

​

public static class Program

{

    static void Data()

    {

        string What;

        Console.WriteLine("What Would You Like To Look Up?");

        What = Console.ReadLine();

        if(What == "SF6")

        {

            Console.WriteLine("Sulfur hexafluoride is an inorganic, colorless, odorless, non-flammable, extremely potent greenhouse gas, and an excellent electrical insulator.");

        }

        if(What == "SF4")

        {

            Console.WriteLine("Sulfur tetrafluoride is the chemical compound with the formula SF₄. It is a colorless gas. It is a corrosive species that releases dangerous HF upon exposure to water or moisture.");

        }

        if(What == "Google")

        {

            Console.WriteLine("Google LLC is an American multinational technology company that specializes in Internet-related services and products, which include online advertising technologies, search engine, cloud computing, software, and hardware.");

        }

        if(What == "Santanadactylus")

        {

            Console.WriteLine("Santanadactylus was a genus of pterodactyloid pterosaur from the Albian-age Romualdo Member of the Upper Cretaceous Santana Formation, of Barra do Jardim, Araripe Plateau, Ceará Province, Brazil.");

        }

    }

    static void Names()

    {

        string Who;

        Console.WriteLine("Who Would You Like To Look Up?");

        Who = Console.ReadLine();

        if(Who == "Elon Musk")

        {

            Console.WriteLine("Elon Reeve Musk FRS is a business magnate and investor. He holds South African, Canadian, and U.S. citizenship and is the founder, CEO, and lead designer of SpaceX; co-founder, CEO, and product architect of Tesla, Inc.; co-founder and CEO of Neuralink; and co-founder of PayPal.");

        }

        if(Who == "Larry Page")

        {

            Console.WriteLine("Lawrence Edward Page is an American computer scientist and Internet entrepreneur who co-founded Google with Sergey Brin. Page is the chief executive officer of Alphabet Inc. After stepping aside as Google CEO in August 2001, in favor of Eric Schmidt, he re-assumed the role in April 2011.");

        }

        if(Who == "Sergey Brin")

        {

            Console.WriteLine("Sergey Mikhaylovich Brin is an American computer scientist and internet entrepreneur. Together with Larry Page, he co-founded Google. Brin is the President of Google's parent company Alphabet Inc. As of June 2018, Brin is the 10th-richest person in the world, with an estimated net worth of US$52.1 billion.");

        }

        if((Who == "António De Oliveira Salazar") || (Who == "Antonio De Oliveira Salazar"));

        {

            Console.WriteLine("António de Oliveira Salazar was a Portuguese statesman who served as Prime Minister of Portugal from 1932 to 1968.");

        }

    }

    public static void Main()

    {

        string Id;

        string If;

        Console.WriteLine("State Your Id");

        Id = Console.ReadLine();

        if(Id == "315125")

        {

            Console.WriteLine("Welcome, Cole.");

            Console.WriteLine("What Would You Like To Know?");

            If = Console.ReadLine();

            if(If == "Names")

            {

                Names();

            }

            if(If == "Data")

            {

                Data();

            }

            Console.WriteLine("Rebooting");

            Main();

        }

        else

        {

            Console.WriteLine("Id Not Recognised");

            Console.WriteLine("Database Locking");

        }

    }

}

​