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

namespace ConsoleApplication44
{
    class Program
    {
        static void Main(string[] args)
        {
            DynamicArray dynArray = new DynamicArray();
            dynArray.AddToArray(5);
            dynArray.ShowArray();
        }
    }

    class DynamicArray
    {
        private int[] array = new int[]{1,2,3,4};

        public void AddToArray (int element)
        {
            int[] tempArray = new int[array.Length + (array.Length/2)];
            for (int i = 0; i < array.Length; i++)
                tempArray[i] = array[i];
            tempArray[array.Length] = element;

            array = tempArray;
        }

        public void ShowArray()
        {
            foreach(int item in array)
            Console.WriteLine(item);
        }
    }
}