using System.Collections.Generic;
using System.Threading.Tasks;
static void Main(string[] args)
string sentence = "My name is Engin Demiroğ";
var result = sentence.Length;
var result2 = sentence.Clone();
sentence = "My name is Derin Demiroğ";
bool result3 = sentence.EndsWith("ğ");
bool result4 = sentence.StartsWith("My name");
var result5 = sentence.IndexOf("namee");
var result6 = sentence.IndexOf(" ");
var result7 = sentence.LastIndexOf(" ");
var result8 = sentence.Insert(0, "Hello, ");
var result9 = sentence.Substring(3,4);
var result10 = sentence.ToLower();
var result11 = sentence.ToUpper();
var result12 = sentence.Replace(" ", "-");
var result13 = sentence.Remove(2,5);
Console.WriteLine(result13);
private static void Intro()
foreach (var item in city)
string city2 = "İstanbul";
Console.WriteLine(String.Format("{0} {1}", city, city2));