using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApp1_Program_objClass{ class Program { private string main_call = ""; public Program str_Protearch_Calleachtty(string call_str) { Console.WriteLine(call_str); main_call = call_str; return this; } Program() { } static void proGram_str(string str) { Console.WriteLine(str); } ~Program() { Console.WriteLine("bornObj_isClear!!!!"); } static void Main(string[] args) { Program pro; Program probjeater = new Program(); Program.proGram_str("world bron!!!!"); pro = probjeater.str_Protearch_Calleachtty("o0_Hello_World_Oro!!!!"); probjeater = pro = null; return; } }}