using System;

public class Program

{

    public static void Main()

    {

        var asdd = "123&sorting=price";

        var asd = asdd.IndexOf("&sorting");

        var asd2 = asdd.Substring(0, asd);

        Console.WriteLine(System.Console.WriteLine("a".ToUpper("a"[0]) + "a".Substring(1)));

    }

}