using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp123
{
    class human
    {
        string name;
        int personnr;

        public human(string name, int personnr)
        {
            this.name = name;
            this.personnr = personnr;
        }

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

        public int Personnr
        {
            get { return personnr; }
            set { personnr = value; }
        }
    }
    class Program
        {
            static int search(List<human> list, int key)
            {
            for (int i = 0; i < list.Count; i++)
            {
                if (list[i].Personnr == key)
                    return i;

            }
            return -1;

        }
        static int search(List<human> list, int key)
        {
            int found = -1;

                for (int i = 0; i < list.Count; i++)
                {

                    if (list[i].Personnr == key)
                        found = i;

                }

            return found;

        }

         static void Main(string[] args)
           {
            while (true)
            {
                List<human> person = new List<human>();


                person.Add(new human("Thomas", 900331));
                person.Add(new human("Lena", 470727));
                person.Add(new human("Lars", 430721));


                Console.WriteLine("[L]ägg till person och personnummer");
                Console.WriteLine("[S]ök  efter personnummer");
                string menu = Console.ReadLine();


                if (menu == "L" || menu == "l")
                {
                    Console.WriteLine("Skriv in namn");
                    string input = Console.ReadLine();
                    Console.WriteLine("Skriv in personnummer 6 siffror");
                    int year = Convert.ToInt32(Console.ReadLine());

                    person.Add(new human(input, year));


                }

                else if (menu == "S" || menu == "s")
                {

                    Console.WriteLine("Skriv in personnr");
                    string personnr = Console.ReadLine();
                    int key = Convert.ToInt32(personnr);
                    int index = search(person, key);

                    if (index == -1)

                        Console.WriteLine("personen finns inte");


                    else

                        Console.WriteLine("Personen med personnr " + key + " finns på index " + (index + 1) + " och heter " +
                        person[index].Name);
                }

            }
        }
    }
}