We are all teachers at Trope High

int multiply(int x) {  
 double x;  
 return x; 
}

namespace GuessingGame

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        // Declare some variables

        int randomNumber = 0;

        int tries = 0;

        string defaultInputMessage = "Guess number here";

        // When you click 'Start Game'

        private void start_btn_Click(object sender, EventArgs e)

        {

            // Set the number for this round

            Random rand = new Random();

            randomNumber = rand.Next(101);

            tries = 9;

            // Place appropriate messages

            result_lbl.Text = "Take a guess!";

            stat_lbl.Text = "Guess a number in the input field.";

            this.Text = "Guessing Game (" + tries.ToString() + ")";

            // Set up controls so you can actually play

            textBox1.Enabled = true;

            textBox1.Text = defaultInputMessage;

            guess_btn.Enabled = true;

        }

        // Show help message

        private void halp()

        {

            //explain how to play

            MessageBox.Show("Guessing Game by Gareth Nettle-Smythe"

                          + "To play:"

                          + " - Click 'New Game.' A number between 0 and 100 will be generated at random."

                          + " - Guess the number by entering it in the text box."

                          + " - Click 'Guess.' If you entered the right number, you win."

                          + "       Otherwise, it will say 'Too high...' or 'Too low...'"

                          + " - Watch out: you only have 9 attempts to get the answer right, or you lose.", "HALP");

        }

        #region Various halp() invocations

        // If you select 'Help...' in the right-click menu

        private void toolStripMenuItem1_Click(object sender, EventArgs e)

        {

            halp();

        }

        // If you click the help button in the title bar (well, it's SUPPOSED to be there)

        private void Form1_HelpButtonClicked(object sender, CancelEventArgs e)

        {

            halp();

        }

        // General help invocations, e.g. pressing F1

        private void Form1_HelpRequested(object sender, HelpEventArgs hlpevent)

        {

            halp();

        }

        #endregion

        // Making sure the 'Quit' button exists for a reason

        private void quit_btn_Click(object sender, EventArgs e)

        {

            Close();

        }

        #region Small extra for input field

        private void textBox1_Enter(object sender, EventArgs e)

        {

            if (textBox1.Text == defaultInputMessage)

            {

                textBox1.Text = "";

            }

        }

        private void textBox1_Leave(object sender, EventArgs e)

        {

            if (textBox1.Text == "")

            {

                textBox1.Text = defaultInputMessage;

            }

        }

        #endregion

        // When you click 'Guess'

        private void guess_btn_Click(object sender, EventArgs e)

        {

            amIRite(textBox1.Text);

            textBox1.Text = defaultInputMessage;

        }

        // Feed this function your guess and if you got it right, you win

        private void amIRite(string g)

        {

            if (textBox1.Text != defaultInputMessage && textBox1.Text != "")

            {

                // Declare integer

                int guess;

                // Good ol' try-'n'-catch

                try

                {

                    guess = int.Parse(g);

                }

                catch (Exception ex)

                {

                    result_lbl.Text = "Uh, what?";

                    stat_lbl.Text = "Not a valid number: "" + textBox1.Text + """;

                    guess = 0;

                }

                // If you're out of guesses...

                if (tries == 1 && guess != randomNumber)

                {

                    MessageBox.Show("Your previous guess was incorrect."

                                  + "Unfortunately, you have no more tries left.", "You Lose");

                    tries = 0;

                    // You've lost now, so...

                    textBox1.Enabled = false;

                    guess_btn.Enabled = false;

                    result_lbl.Text = "You lose!";

                    stat_lbl.Text = "You ran out of tries before you guessed the number right.";

                    this.Text = "Guessing Game";

                }

                if (guess == randomNumber) // You are winner! Hahaha.

                {

                    tries—;

                    result_lbl.Text = "You win!";

                    stat_lbl.Text = "Yes, the number was " + guess.To String() + ".";

                    this.Text = "Guessing Game";

                    // The game's finished now, so...

                    textBox1.Enabled = false;

                    guess_btn.Enabled = false;

                }

                else if (guess > randomNumber && guess < 100) // YOU'RE TOO FRICKEN' HIGH UP!!

                {

                    tries—;

                    result_lbl.Text = "Too high...";

                    stat_lbl.Text = "The number is lower than " + guess.To String() + ".";

                    this.Text = "Guessing Game (" + tries.To String() + ")";

                }

                else if (guess < randomNumber && guess > 0) // Now you're not high up enough.

                {

                    tries—;

                    result_lbl.Text = "Too low...";

                    stat_lbl.Text = "The number is higher than " + guess.To String() + ".";

                    this.Text = "Guessing Game (" + tries.To String() + ")";

                }

                else if (guess <= 0 || guess >= 100)

                {

                    result_lbl.Text = "Uh, what?";

                    stat_lbl.Text = "Outside the valid guess spectrum: " + guess + "";

                }

            }

        }

        // Triggered when you press a key and invokes amIRite if the key is Enter

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)

        {

            if (e.KeyChar == (char)13)

            {

                amIRite(textBox1.Text);

                textBox1.Text = "";

            };

        }

    }

}