Ezaz, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Collections;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Globalization;
/*
namespace proba
{
    class Program
    {
        public struct kutya
        {
            public string fajta;
            public string nem;
            public byte eletkor;
            public string nev;
        }
        
        static void Main()
        {
           StreamWriter iras = new StreamWriter("kutyak.txt", false,Encoding.Default);
          iras.WriteLine("mopsz;kan;3;Pluto");
          iras.WriteLine("mopsz;szuka;6;Jazmin");
          iras.WriteLine("mopsz;kan;1;Lassie");
          iras.WriteLine("mopsz;kan;7;Bonyhart");
          iras.WriteLine("tacsko;szuka;1;Lille");
          iras.WriteLine("tacsko;szuka;1;Bodi");
          iras.WriteLine("tacsko;kan;3;Bodri");
          iras.WriteLine("tacsko;kan;7;Birk");
          iras.WriteLine("agar;szuka;2;Biboca");
          iras.WriteLine("nemetjuhasz;kan;8;Volt");
          iras.Close();
           List<kutya> kutyak = new List<kutya>();
           FileStream fs = new FileStream("kutyak.txt", FileMode.Open);
           StreamReader sr = new StreamReader(fs, Encoding.UTF8);
           string sor = "";
           while(!sr.EndOfStream)
           {
               sor = sr.ReadLine();
               string[] darabok = sor.Split(';');
               kutya k = new kutya();
               k.fajta = darabok[0];
               k.nem = darabok[1];
               k.eletkor = Convert.ToByte(darabok[2]);
               k.nev = darabok[3];
               kutyak.Add(k);
           }
           sr.Close();
           fs.Close();
           foreach(kutya elem in kutyak)
           {
               Console.WriteLine(elem.nev + " " + elem.fajta + " " + elem.eletkor + " " + elem.nem);
               
             }  
         
             Random rd = new Random();
             int size = 50;
             int villa[size];
             for(int i = 0; i < 50; i++)
             {
                 Console.WriteLine(villa[i]);
             }
               
               
              ArrayList pelda = new ArrayList(50);
              pelda.Add(9);
              pelda.Add("Ez a szoveg");
              pelda.Add('s');
              pelda.Add(true);
              Console.WriteLine("");
              Console.WriteLine("");
              Console.WriteLine(pelda[1] is string);
              Console.WriteLine(pelda[0] is string);
              Console.WriteLine(pelda[1].GetType());
              Console.WriteLine(pelda[0].GetType());
              for(int i = 0; i < pelda.Count; i++)
              {
                  Console.WriteLine(pelda[i]);
              }
              int a = Convert.ToInt32(pelda[0]);
              string b = (string) pelda[1];
               Console.WriteLine(a + " " + b);
           List<int> pelda2 = new List<int>(50);
           pelda2.Add(2);
           pelda2.Add(3);
           pelda2.Add(5);
           pelda2.Add(8);
           pelda2.Add(10);
           pelda2.Add(12);
           pelda2.Add(14);
           pelda2.Add(15);
           Console.WriteLine("");
          for(int i = 0; i < pelda2.Count; i++)
           {
               
               Console.Write(pelda2[i] + " ");
           }
           
           Console.WriteLine("");
          Console.WriteLine(pelda2.Contains(3));
          Console.WriteLine(pelda2.Contains(1));
          pelda2.Insert(3, 6);
          pelda2.Remove(15);
          pelda2.RemoveAt(0);
          pelda2.RemoveAt(6);
              for(int i = 0; i < pelda2.Count; i++)
           {
               
               Console.Write(pelda2[i] + " ");
           }
           
           Console.WriteLine("");
           Console.WriteLine("");
           int[] szamok = new int[10];
           szamok[0] = 5;
           szamok[2] = 4;
           szamok[1] = 7;
           szamok[3] = 8;
           szamok[4] = 9;
           for(int i = 0; i < 10; i++)
           {
               Console.Write(szamok[i] + " ");
           }
         Console.WriteLine("");
         Console.WriteLine("");
         int[,] szam = new int[2,3];
        
         for(int i = 0; i < 2; i++)
         {
             for(int j = 0; j < 3; j++ )
             {
         szam[i,j] = 2*i + j;
             }
         }
         
         for(int i = 0; i < 2; i++)
         {
             for(int j = 0; j < 3; j++ )
             {
       Console.Write(szam[i,j] + "\t");
             }
         }
        Console.WriteLine("");
        Console.WriteLine("");
        int[] v = new int[100];
        Random r = new Random();
        for(int i = 0; i < 100; i++)
        {
            v[i] = r.Next(0, 1000);
        }
         for(int i = 0; i < 100; i++)
         {
             Console.Write(v[i] + "\t");
     */

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
           /*

StreamWriter iras = new StreamWriter("kutyak.txt", false,Encoding.Default);
          iras.WriteLine("mopsz;kan;3;Pluto");
          iras.WriteLine("mopsz;szuka;6;Jazmin");
          iras.WriteLine("mopsz;kan;1;Lassie");
          iras.WriteLine("mopsz;kan;7;Bonyhart");
          iras.WriteLine("tacsko;szuka;1;Lille");
          iras.WriteLine("tacsko;szuka;1;Bodi");
          iras.WriteLine("tacsko;kan;3;Bodri");
          iras.WriteLine("tacsko;kan;7;Birk");
          iras.WriteLine("agar;szuka;2;Biboca");
          iras.WriteLine("nemetjuhasz;kan;8;Volt");
          iras.Close();
           List<kutya> kutyak = new List<kutya>();
           FileStream fs = new FileStream("kutyak.txt", FileMode.Open);
           StreamReader sr = new StreamReader(fs, Encoding.UTF8);
           string sor = "";
           while(!sr.EndOfStream)
           {
               sor = sr.ReadLine();
               string[] darabok = sor.Split(';');
               kutya k = new kutya();
               k.fajta = darabok[0];
               k.nem = darabok[1];
               k.eletkor = Convert.ToByte(darabok[2]);
               k.nev = darabok[3];
               kutyak.Add(k);
           }
           sr.Close();
           fs.Close();
           foreach(kutya elem in kutyak)
           {
               Console.WriteLine(elem.nev + " " + elem.fajta + " " + elem.eletkor + " " + elem.nem);
               
             }  
*/
         /*      
             Random rd = new Random();
             int size = 50;
             int villa[size];
             for(int i = 0; i < 50; i++)
             {
                 Console.WriteLine(villa[i]);
             }
               */
               
              ArrayList pelda = new ArrayList(50);
              pelda.Add(9);
              pelda.Add("Ez a szoveg");
              pelda.Add('s');
              pelda.Add(true);
              Console.WriteLine("");
              Console.WriteLine("");
              Console.WriteLine(pelda[1] is string);
              Console.WriteLine(pelda[0] is string);
              Console.WriteLine(pelda[1].GetType());
              Console.WriteLine(pelda[0].GetType());
              for(int i = 0; i < pelda.Count; i++)
              {
                  Console.WriteLine(pelda[i]);
              }
              int a = Convert.ToInt32(pelda[0]);
              string b = (string) pelda[1];
               Console.WriteLine(a + " " + b);
           List<int> pelda2 = new List<int>(50);
           pelda2.Add(2);
           pelda2.Add(3);
           pelda2.Add(5);
           pelda2.Add(8);
           pelda2.Add(10);
           pelda2.Add(12);
           pelda2.Add(14);
           pelda2.Add(15);
           Console.WriteLine("");
          for(int i = 0; i < pelda2.Count; i++)
           {
               
               Console.Write(pelda2[i] + " ");
           }
           
           Console.WriteLine("");
          Console.WriteLine(pelda2.Contains(3));
          Console.WriteLine(pelda2.Contains(1));
          pelda2.Insert(3, 6);
          pelda2.Remove(15);
          pelda2.RemoveAt(0);
          pelda2.RemoveAt(6);
              for(int i = 0; i < pelda2.Count; i++)
           {
               
               Console.Write(pelda2[i] + " ");
           }
           
           Console.WriteLine("");
           Console.WriteLine("");
           int[] szamok = new int[10];
           szamok[0] = 5;
           szamok[2] = 4;
           szamok[1] = 7;
           szamok[3] = 8;
           szamok[4] = 9;
           for(int i = 0; i < 10; i++)
           {
               Console.Write(szamok[i] + " ");
           }
         Console.WriteLine("");
         Console.WriteLine("");
         int[,] szam = new int[2,3];
        
         for(int i = 0; i < 2; i++)
         {
             for(int j = 0; j < 3; j++ )
             {
         szam[i,j] = 2*i + j;
             }
         }
         
         for(int i = 0; i < 2; i++)
         {
             for(int j = 0; j < 3; j++ )
             {
       Console.Write(szam[i,j] + "\t");
             }
         }
        Console.WriteLine("");
        Console.WriteLine("");
        int[] v = new int[100];
        Random r = new Random();
        for(int i = 0; i < 100; i++)
        {
            v[i] = r.Next(0, 1000);
        }
         for(int i = 0; i < 100; i++)
         {
             Console.Write(v[i] + "\t");
         }
         Console.WriteLine("\n" + "\n" + "\n" + "\n");
         int a56 = 8;
         kiir(a56);
         string abc = Console.ReadLine();
         a56 = System.Int32.Parse(abc);
         kiir(a56);
        }
        static void kiir(int szam)
        {
            Console.WriteLine(szam);
        }

}
}

Show compiler warnings [ + ] Show input
Compilation time: 0,31 sec, absolute running time: 10 sec, cpu time: 0,11 sec, average memory usage: 25 Mb, average nr of threads: 5, absolute service time: 10,32 sec