Question

In JAVA, write a number guessing game that randomly assigns a integer between one and twenty for the user to guess.

Write three methods to make this particular program work.

1. Have a method which generates a random number and returns the value to the main (stored as a variable)

2. Have a method which prompts the user for a guess. Return the guess to the main.

3. Evaluate the guess and the random "secret" number by parameters, and then have it evaluate if the guess is correct. RETURN A STRING to let the user know if the guess was correct, too high, or too low.

Use a nested loop in main. Ask the user if they would like to play again. Use an inner loop that continually calls the third method until the guess is correct.

Answer 1

Code:-

import java.lang.*;
import java.util.*;
class game{
   public static int generator(){
       Random rand = new Random(); //random number generator
       return rand.nextInt(20); //returning random number
   }
   public static int userguess(){ //function to take input from user
       System.out.print("Enter your Guess: ");
       Scanner scan=new Scanner(System.in); //scanner
       int guess=scan.nextInt(); //taking input from user
        return guess; //returning guess
   }
   public static String evaluate(int rand,int guess){ //function to return string
       if(guess>rand) //if guess is higher than random number
           return "TOO HIGH";
       else if(guess<rand) //if guess is lower than random number
           return "TOO LOW";
       else //if guess and random number are equal
           return "CORRECT";
   }
   public static void main(String[] args) { //main function
       while(true){ //loop until use enter want to exit by clicking n
           int rand=generator(); //calling function
           while(true){ //loop until user guess the correct number
               int guess=userguess();
               String eval=evaluate(rand,guess); //calling function
               System.out.println(eval); //calling function
               if(eval.equals("CORRECT")) //if guess is correct
                   break;
           }
           System.out.print("Do You Want to play Again(y/n): "); //enter n for stop
           Scanner scan=new Scanner(System.in);
           char ch=scan.nextLine().charAt(0); //taking input from user
           if(ch=='n') //if user enters n
               break; //breaking the loop
       }
   }
}

Output:-