Guessinator

Guessinator.cs

using System;

namespace Guessinator
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Console.WriteLine("Hello world! Would you like to play a guessing game?");
                var input = Console.ReadLine().ToLowerInvariant();
                if (input.Contains("yes"))
                {
                    Console.WriteLine("OK, We'll play a game");
                    var randomNumber = GuessNumber(1, 1000);
                    Console.WriteLine("Guess a number:");

                    var userGuess = int.Parse(Console.ReadLine());
                    while (userGuess != randomNumber)
                    {
                        if (userGuess > randomNumber)
                        {
                            Console.WriteLine($"You stink. It's lower than {userGuess}.");
                        }
                        else
                        {
                            Console.WriteLine($"You stink. It's higher than {userGuess}.");
                        }
                        userGuess = int.Parse(Console.ReadLine());
                    }

                    Console.WriteLine("You won, but you still stink.");
                }
                else
                {
                    Console.WriteLine("You stink.");
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }

            Console.ReadKey();
        }

        static int GuessNumber(int lowerNumber, int higherNumber) => new Random().Next(lowerNumber, higherNumber);
    }
}