using System;

public class Program

{

    public static void Main()

    {

           string str1,str2,result;

           Console.Write("Enter first string : ");

           str1 = Console.ReadLine();

           Console.Write("Enter second string : ");

           str2 = Console.ReadLine();

           result = string.Concat(str1 , str2);

           Console.Write("Output: " + result);

           Console.ReadLine();

    }

}