Question

7.30 - Guess-the-Number Game (Project Name: GuessTheNumber) - Write an app that plays “Guess the Number” as follows: Your app chooses the number to be guessed by selecting a random integer in the range 1 to 1000. The app displays the prompt "Guess a number between 1 and 1000: ". The player inputs a first guess. If the player’s guess is incorrect, your app should display Too high. Try again. or Too low. Try again. to help the player “zero in” on the correct answer. The app should prompt the user for the next guess. When the user enters the correct answer, display Congratulations. You guessed the number! and allow the user to choose whether to play again. [Note: The guessing technique employed in this problem is using a similar strategy to a binary search, which is discussed in using c#

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

using System;
class Program {

    static void Main(string[] args) {
        //creating a random number generator
        Random rand = new Random();
        //generating a random number between 1 and 1000 and storing
        int secretNumber=(rand.Next()%1000)+1;
        //initializing userGuess to 0
        int userGuess=0;
        //looping as long as user guess is not same as secret number
        while(userGuess!=secretNumber){
            //asking and reading guess
            Console.Write("\nGuess a number between 1 and 1000: ");
            userGuess=int.Parse(Console.ReadLine());
            //checking if guess is correct
            if(userGuess==secretNumber){
                //printing success message
                Console.WriteLine("Congratulations. You guessed the number!");
                //asking if player wants to play again
                Console.Write("\nDo you want to play again? (y/n): ");
                string ch=Console.ReadLine().ToLower();
                if(ch.Equals("y")){
                    //generating another secret number and starting userGuess with value 0
                    secretNumber=(rand.Next()%1000)+1;
                    userGuess=0;
                }
            }else if(userGuess<secretNumber){
                //low
                Console.WriteLine("Too low. Try again.");
            }else{
                //high
                Console.WriteLine("Too high. Try again.");
            }
        }
        
        //waiting for a key press to quit, remove if you dont need.
        Console.ReadKey();
    }
}

/*OUTPUT*/

Guess a number between 1 and 1000: 500

Too high. Try again.

Guess a number between 1 and 1000: 250

Too low. Try again.

Guess a number between 1 and 1000: 375

Too high. Try again.

Guess a number between 1 and 1000: 300

Too low. Try again.

Guess a number between 1 and 1000: 325

Too high. Try again.

Guess a number between 1 and 1000: 310

Too high. Try again.

Guess a number between 1 and 1000: 302

Too low. Try again.

Guess a number between 1 and 1000: 305

Congratulations. You guessed the number!

Do you want to play again? (y/n): y

Guess a number between 1 and 1000: 500

Too high. Try again.

Guess a number between 1 and 1000: 300

Too low. Try again.

Guess a number between 1 and 1000: 350

Too low. Try again.

Guess a number between 1 and 1000: 400

Too low. Try again.

Guess a number between 1 and 1000: 450

Too low. Try again.

Guess a number between 1 and 1000: 490

Too high. Try again.

Guess a number between 1 and 1000: 480

Too high. Try again.

Guess a number between 1 and 1000: 475

Too high. Try again.

Guess a number between 1 and 1000: 460

Too low. Try again.

Guess a number between 1 and 1000: 465

Too high. Try again.

Guess a number between 1 and 1000: 462

Too high. Try again.

Guess a number between 1 and 1000: 461

Congratulations. You guessed the number!

Do you want to play again? (y/n): n