using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string nama = Console.ReadLine();

        int umur = int.Parse(Console.ReadLine());

        //Console.WriteLine("Halo nama saya adalah " + nama);

        //Console.WriteLine("Umur saya " + umur + " tahun");

        //array

        var universitas = new string[3] {"UI","Binus", "itb"};

        //looping

        for(int i=0;i<universitas.Length;i++){

            Console.WriteLine(i);

        }

        int[] harga = new int[4];

        for(int i=0;i<harga.Length;i++){

            harga[i] = 150 + i;

            Console.WriteLine(harga[i]);

        }

        //list

        var listHarga = new List<int>();

        listHarga.Add(3000);

        listHarga.Add(3500);

        listHarga.Add(4000);

        listHarga.Add(5000);

        Console.WriteLine("index ke 2 = " + listHarga[1]);

        foreach(int list in listHarga){

            Console.WriteLine("Harga menggunakan List : "+ list);

        }

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

            Console.WriteLine("ini menggunakan index = " + listHarga[i]);

        }

        //while loop

        int j = 0;

        Console.WriteLine(listHarga.Count);

        while(j<listHarga.Count){

            Console.WriteLine("tes = " + listHarga[j]);

            j++;

        }

        //method void

        Introduction(nama,umur);

        //method return int

        var hitung = Calculate(10,8);

        Console.WriteLine("isi dari hitung = "+hitung);

        //Switch

        Console.WriteLine("======= Menu =======");

        Console.WriteLine("1. Menu satu");

        Console.WriteLine("2. Menu dua");

        Console.WriteLine("3. Menu tiga");

        Console.WriteLine("Lainnya = Keluar");

        Console.WriteLine("====================");

        int menuUser= int.Parse(Console.ReadLine());

        switch(menuUser){

            case 1:

                Console.WriteLine("ini menu 1");

                break;

            case 2:

                Console.WriteLine("ini menu 2");

                break;

            case 3:

                Console.WriteLine("ini menu 3");

                break;

            default:

                Console.WriteLine("anda Keluar");

                break;

        }

    }

    //method void

    static void Introduction(string nama, int umur){

        Console.WriteLine("Halo perkenalkan nama saya "+ nama);

        Console.WriteLine("Saya Berumur "+ umur + " tahun");

    }

    static int Calculate(int a, int b){

        return a + b;

    }

}