using System;

public class Program

{

    public static void Main()

    {

        char[] chr= {'a','s','d','f'};

        string str= "asdf";

        Console.WriteLine("{0} {1}", chr.ToString(), str);

             str= " is this Contains asdf ";

        string s= "i";

        //Console.WriteLine(str.    .IndexOfAny(s));

        Console.WriteLine("[{0}] => [{1}]", str, str.Trim().ToUpper());

    }

}