Explanation:
It's a very easy one, Liev:
using System;
class Twitter
{
static void Main()
{
Console.WriteLine("Enter your message");
Console.WriteLine();
string message = Console.ReadLine();
Console.WriteLine();
if (message.Length <= 140)
{
Console.WriteLine("Yes, it's short enough for Twitter");
}
else
{
Console.WriteLine("Sorry, it's too long for Twitter");
}
Console.ReadKey();
}
}