using System;

public class Program

{

    public static void Main()

    {

        string s_or_t = "";

        string first_name = "";

        string last_name = "";

        string school = "";

        string s_diploma = "";

        string s_graduationyear = "";

        string t_subject = "";

        string t_duration = "";

        Console.WriteLine("Hello, I need some information first.");

        case1: 

            Console.WriteLine("Are you a student or teacher?");

            s_or_t = Console.ReadLine();

        //convert all to lowercase

        if (Equals(s_or_t, "student") == true)

        {

            Console.WriteLine("What is your first name?: ");

            first_name = Console.ReadLine();

            Console.WriteLine("What is your last name?: ");

            last_name = Console.ReadLine();

            Console.WriteLine("What school do you go to?: ");

            school = Console.ReadLine();

            Console.WriteLine("What diploma are you studying for?: ");

            s_diploma = Console.ReadLine();

            Console.WriteLine("When do you graduate?: ");

            s_graduationyear = Console.ReadLine();

            Console.WriteLine("-----------------");

            Console.WriteLine("Hello {0} {1}.", first_name, last_name);

            Console.WriteLine("Thank you for your information. You are a student at {0} and are studying {1} and will graduate in {2}!", school, s_diploma, s_graduationyear);

        }

        else if (Equals(s_or_t, "teacher") == true)

        {

            Console.WriteLine("What is your first name?: ");

            first_name = Console.ReadLine();

            Console.WriteLine("What is your last name?: ");

            last_name = Console.ReadLine();

            Console.WriteLine("What school do teach at?: ");

            school = Console.ReadLine();

            Console.WriteLine("What subject do you teach?: ");

            t_subject = Console.ReadLine();

            Console.WriteLine("How long have you been teaching?: ");

            t_duration = Console.ReadLine();

            Console.WriteLine("-----------------");

            Console.WriteLine("Hello {0} {1}.", first_name, last_name);

            Console.WriteLine("Thank you for your information. You are a teacher at {0} and teach {1} and have been there for {2}!", school, t_subject, t_duration);

        }

        else

        {

            Console.WriteLine("INVALID ENTRY, please use all lower case and type the full word.");

            goto case1;

        }   

    }

}