Question

I am making a random number guessing game which the computer thinks of a number between 1-100. It then asks you what it is and tells you if you are right or wrong. However, whenever I debug, it says that it is higher or lower than the actual random number for some reason. Plus, it says two of those statements at once. Also, I’m not sure how to say how many guesses the person has taken. Here is my unsuccessful code.

static void Main(string[] args) 
{
    Random random = new Random();

    int returnValue = random.Next(1, 100);
    int Guess = 0;

    Console.WriteLine("I am thinking of a number between 1-100.  Can you guess what it is?");

    while (Guess != returnValue)
    {
        Guess = Convert.ToInt32(Console.Read());

        while (Guess < returnValue)
        {
            Console.WriteLine("No, the number I am thinking of is higher than " + Guess + " .  Can you guess what it is?");
            Console.ReadLine();

        }
        while (Guess > returnValue)
        {
            Console.WriteLine("No, the number I am thinking of is lower than " + Guess + " .  Can you guess what it is");
            Console.ReadLine();
        }
    }
    while (Guess == returnValue)
    {
        Console.WriteLine("Well done! The answer was " + returnValue);
        Console.ReadLine();
    }
}

Answer 1

You’re using a lot of unneeded iteration. The while statement takes a Boolean condition just like an IF statement.

    static void Main(string[] args)
    
    {
    
    Random random = new Random();
    
    int returnValue = random.Next(1, 100);
    
            int Guess = 0;
    
            Console.WriteLine("I am thinking of a number between 1-100.  Can you guess what it is?");
    
            while (Guess != returnValue)
            {
                Guess = Convert.ToInt32(Console.ReadLine());
    
                if (Guess < returnValue)
                {
                    Console.WriteLine("No, the number I am thinking of is higher than " + Guess + ". Can you guess what it is?");
                }
                else if (Guess > returnValue)
                {
                    Console.WriteLine("No, the number I am thinking of is lower than " + Guess + ". Can you guess what it is?");
                }

            }

            Console.WriteLine("Well done! The answer was " + returnValue);
            Console.ReadLine();
            
    }