Thread: guess program problems.

import java.util.Random;
import java.util.Scanner;
import java.io.*;         //needed for file and IOException
 
/**
	This program will demonstrate a guessing game.
 
*/
 
public class RandomNumberGuessingGame
{
	public static void main(String[] args) throws IOException
	{
		// Constant for maximum random number
		final int MAX_NUMBER = 10;
 
		// Variables go here
		int guess; 			// Holds the users guess
		int randNum;		// Holds the random number
      int count = 1;    // Number of guess counter
      double guessScore;   // Guess %
      String fileName;  // Name of the file
 
		// Create the Scanner object
		Scanner keyboard = new Scanner(System.in);
 
		// Create a random object
		Random rand = new Random();
 
		// Generate random number
 
		randNum = rand.nextInt(MAX_NUMBER);
 
		// Get the users guess
		System.out.println("I'm thinking of a number.");
		System.out.println("Guess what it is: ");
		guess = keyboard.nextInt();
 
      // Make random number is greater than 0
 
 
		// Respond to the user's guesses
		while (guess != randNum)
		{
 
			if (guess < randNum)
			{
				System.out.println("No, that's too low!");
            count++;
			}
			else if (guess > randNum)
			{
				System.out.println("No, that's too high!");
            count++;
			}
			System.out.println("Guess again: ");
			guess = keyboard.nextInt();
 
 
		}
 
		//Congratuation the user
		System.out.println("Congratuation!	You guessed it!");
		System.out.println("I was thinking of the number " + randNum + ".");
 
 
 
      keyboard.nextLine(); //Terminate input buff.
 
      //Get the file name
      System.out.print("Enter the file name: ");
      fileName = keyboard.nextLine();
 
      //Get output file name
      PrintWriter outputFile = new PrintWriter(fileName);
 
      //Calculate Guess Score
      guessScore = (((11-count)/11)*100);
 
      outputFile.println("Game Results");
      outputFile.println("----------------------");
      outputFile.println("Random Number: " + randNum);
      outputFile.println("Number of Guesses: " + count);
      outputFile.println("Guessing Score: " + guessScore + "%");
		outputFile.close(); //close output
 
 
 
	}
}

I have two problems.
1. I don't know how to make random number always greater than 0

2. when I calculate total score, i always get 0%. why is that? I tried to other division calculation but jgrasp always shows 0 if number is less than 1. for example if i do 10/5, it shows 2 which is right. but if I do 5/10, instead of shoing 0.5, it always shows 0. how do I fix this?

pseudo code
1. computer picks random number between 1 to 10
2. user input guess #
3. computer asks number over and over until user gets right one
4. display result

Game Results
---------------------------------
Random Number: (display answer)
Number of guesses: (display answer)
Guessing Score: (% accuracy guessing) - Feedback Message

Your problems:

1. If you need random numbers of a certain size, then either start with what you have and add, multiply, or use some combination of both to get a random number of the desired size.

2. Integer types can't be used to calculate, store, or display decimal values by themselves. Java 'assumes' a value is an integer unless told otherwise, so the equation, (((11-count)/11)*100), is all integers.