using System;
class Program
{
static string ReverseWords(string s) {
string [] arr = s.Split(' ');
for (int i = 0; i < arr.Length; i++) {
char[] charArray = arr[i].ToCharArray();
Array.Reverse(charArray);
arr[i] = new string(charArray);
}
Array.Reverse(arr);
return string.Join(" ", arr);
}
static void Main() {
string s = "C# is a general purpose programming language";
s = ReverseWords(s);
Console.Write(s);
}
}
/*
run:
egaugnal gnimmargorp esoprup lareneg a si #C
*/