O.2.2.cs

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

namespace numbersTogather_2
{
    class Program
    {
        static int getAB(int a, int b)
        {
            return int.Parse(a.ToString() + b.ToString());
        }

        public class myCounter
        {
            int _number;
            int posToReplace = 1;
            string current;
            
            public myCounter()
            {
                _number = 0;
                current = _number.ToString();
            }

            public string getNext()
            {
                
                if (_number % 10 == 0 && _number != 0)
                {

                    current = _number.ToString();
                    int len = current.Length - 2;
                    current = current.Remove(len, 1).Insert(len, "0");

                    _number++;
                    return current;
                }

                current = (_number).ToString();
                _number++;
                return current;
            }
        }

        static void Main(string[] args)
        {
            myCounter counter = new myCounter();
            for (int i = 0; i < 101; i++)
            {
                Console.WriteLine(counter.getNext());
            }
            /* Console.WriteLine("Enter A natural number");
            int a = int.Parse(Console.ReadLine());

            Console.WriteLine("Enter C natural number");
            int c = int.Parse(Console.ReadLine());

            int prevVal = 0;
            int b = 0;
            int ab = getAB(a, b);
            
            while (ab % c != 0)
            {
                ab = getAB(a, ++b);
            }

            Console.WriteLine("A = {0}; \nB = {1}; \nAB = {2}; \nAB mod C = {2} mod {3}", a, b, ab, c);
            Console.ReadLine();
             */
        }
    }
}