using System; using System.Linq; public static class Bob { public static string Response(string statement) { if (string.IsNullOrWhiteSpace(statement)) return "Fine. Be that way!"; if (statement.Any(Char.IsLetter) && statement.Where(Char.IsLetter).All(Char.IsUpper)) if (statement.Contains("?")) return "Calm down, I know what I'm doing!"; else return "Whoa, chill out!"; if (statement.Trim().EndsWith("?")) return "Sure."; return "Whatever."; } }