Programming Forums > Application Development > Java

Ooble · Apr 3rd, 2005, 7:01 PM

It's an infinite loop that can only be broken out of by a break; statement.

Dark Flare Knight · Apr 3rd, 2005, 9:54 PM

Quote:

Originally Posted by xavier

Hey, listen, I personaly think that you have no ideea about what you'r doing. You just copyed the bit I gave; think for a change.

Honestly, .. go study....

Sorry i didn't understand what you were saying earlier. I got the program running but i still need to fix something. Here is the code:

(Toggle Plain Text)

import java.awt.*;
import hsa.Console;
public class guess
{
    static Console c = new Console ();
    static public void main (String[] args)
    {
        int g1, i = 0;
        char play;
        c.clear ();
        for (int x = 0 ; x < 11 ; x++)
        {
            c.setTextColor (Color.black);
            i++;
            do
            {
                c.print ("What is your guess? ");
                g1 = c.readInt ();
                if (g1 >= 10 || g1 <= 0)
                    c.println ("Error! Please enter a number between 0 and 10");
            }
            while (g1 >= 10 || g1 <= 0);
            for (;;)
            {
                if (g1 == x)
                {
                    c.println ("You got the number " + g1 + " in " + i + " tries.");
                    break;
                }
                else
                {
                    c.println ("The number you entered is wrong.");
                    break;
                }

            }

        }
    }
}

I want the program to get a random number between 0 and 10 but the number this program is guessing is the same all the time. If i run it, after 5 tries, the number is always 5 and when it first starts, the number is always 0. I'm not really sure how to use the Math.random () if thats what is to be used here. Can someone tell me what to do?

xavier · Apr 4th, 2005, 12:25 AM

Here's how I did your problem. I don't have the hsa.console pakage to import so I used java.io.

(Toggle Plain Text)

import java.awt.*;
import java.io.*;
import java.util.*;

public class guess
{
 
    static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    static public void main (String[] args)
    {


        Random r=new Random();
       	int x= Math.abs(r.nextInt(10));
       	System.out.println(x);   // just so u see the number for testing

       	int g1=0;


            System.out.println ("The number is between 0 and 10 ");
			System.out.println ("Try and guess it!");


            int i = 0;
            for (;;)
            {
			try{
			String s=in.readLine();
            		if(s.equals("exit"))break;        //to exit if you'r bored :)
            		else	g1 = Integer.parseInt(s);
           		}  catch(IOException e){e.printStackTrace();}

                if (g1 == x)
                {
                    i++;
                    System.out.println ("Yeaapyy u found the number " + g1 + " in " + i + " tries");
                    break;
                }
                else
                {
                    System.out.println ("The number you entered is wrong");
                    i++;
                }
            }
        }
    }

You can just modify it to fit your needs. You see there nextInt(10). It will generate numbers from 0 to 9. So if you have nextInt(n) .... it generates numebers between 0 an n-1.

Hope it's all clear from now on. All the best to you.

Dark Flare Knight · Apr 4th, 2005, 7:29 AM

there's just 1 problem with that, i haven't yet learned any other packages except hsa.Console (); so i don't really know how they work.

xavier · Apr 4th, 2005, 10:32 AM

Well, just replace the BufferedReader with your Console. they seem to be equivalent.
instead of :

(Toggle Plain Text)

 static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

use

(Toggle Plain Text)

static Console in = new Console ();

It should work ..

Dark Flare Knight · Apr 4th, 2005, 3:40 PM

i got it to work with only using hsa.Consoloe ();. I'll post the code here later. Now i gotta finish the check book assignment.

Here it is:

(Toggle Plain Text)

import java.awt.*;
import hsa.Console;
public class guess
{
    static Console c = new Console ();
    static public void main (String[] args)
    {
        int g1, i = 0;
        char play;
        c.clear ();
        for (int x = 0 ; x <= 10 ; x++)
        {

            x = (int) (Math.random () * 10) + 0;
            c.setTextColor (Color.black);
            i++;
            do
            {
                c.print ("What is your guess? ");
                g1 = c.readInt ();
                if (g1 > 10 || g1 <= 0)
                    c.println ("Error! Please enter a number between 0 and 10");
            }
            while (g1 > 10 || g1 <= 0);
            {
                if (g1 == x)
                {
                    c.println ("You got the number " + g1 + " in " + i + " tries.");
                    break;
                }
                else
                {
                    c.println ("The number you entered is wrong.");
                }
            }
        }
    }
}

Apr 3rd, 2005, 7:01 PM	#11
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	It's an infinite loop that can only be broken out of by a break; statement. __________________ Me :: You :: Them

Apr 4th, 2005, 12:25 AM	#13
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 383 Rep Power: 4	Here's how I did your problem. I don't have the hsa.console pakage to import so I used java.io. (Toggle Plain Text) import java.awt.; import java.io.; import java.util.; public class guess { static BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); static public void main (String[] args) { Random r=new Random(); int x= Math.abs(r.nextInt(10)); System.out.println(x); // just so u see the number for testing int g1=0; System.out.println ("The number is between 0 and 10 "); System.out.println ("Try and guess it!"); int i = 0; for (;;) { try{ String s=in.readLine(); if(s.equals("exit"))break; //to exit if you'r bored :) else g1 = Integer.parseInt(s); } catch(IOException e){e.printStackTrace();} if (g1 == x) { i++; System.out.println ("Yeaapyy u found the number " + g1 + " in " + i + " tries"); break; } else { System.out.println ("The number you entered is wrong"); i++; } } } } import java.awt.; import java.io.; import java.util.; public class guess { static BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); static public void main (String[] args) { Random r=new Random(); int x= Math.abs(r.nextInt(10)); System.out.println(x); // just so u see the number for testing int g1=0; System.out.println ("The number is between 0 and 10 "); System.out.println ("Try and guess it!"); int i = 0; for (;;) { try{ String s=in.readLine(); if(s.equals("exit"))break; //to exit if you'r bored :) else g1 = Integer.parseInt(s); } catch(IOException e){e.printStackTrace();} if (g1 == x) { i++; System.out.println ("Yeaapyy u found the number " + g1 + " in " + i + " tries"); break; } else { System.out.println ("The number you entered is wrong"); i++; } } } } You can just modify it to fit your needs. You see there nextInt(10). It will generate numbers from 0 to 9. So if you have nextInt(n) .... it generates numebers between 0 an n-1. Hope it's all clear from now on. All the best to you. __________________ Don't take life too seriously, it's not permanent ! Last edited by xavier; Apr 4th, 2005 at 12:29 AM.

Apr 4th, 2005, 7:29 AM	#14
Dark Flare Knight Hobbyist Programmer Join Date: Mar 2005 Location: Canada Posts: 113 Rep Power: 4	there's just 1 problem with that, i haven't yet learned any other packages except hsa.Console (); so i don't really know how they work. Last edited by Dark Flare Knight; Apr 4th, 2005 at 7:33 AM.

Apr 4th, 2005, 10:32 AM	#15
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 383 Rep Power: 4	Well, just replace the BufferedReader with your Console. they seem to be equivalent. instead of : (Toggle Plain Text) static BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); static BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); use (Toggle Plain Text) static Console in = new Console (); static Console in = new Console (); It should work .. __________________ Don't take life too seriously, it's not permanent !

Apr 4th, 2005, 3:40 PM	#16
Dark Flare Knight Hobbyist Programmer Join Date: Mar 2005 Location: Canada Posts: 113 Rep Power: 4	i got it to work with only using hsa.Consoloe ();. I'll post the code here later. Now i gotta finish the check book assignment. Here it is: (Toggle Plain Text) import java.awt.; import hsa.Console; public class guess { static Console c = new Console (); static public void main (String[] args) { int g1, i = 0; char play; c.clear (); for (int x = 0 ; x <= 10 ; x++) { x = (int) (Math.random () 10) + 0; c.setTextColor (Color.black); i++; do { c.print ("What is your guess? "); g1 = c.readInt (); if (g1 > 10 \|\| g1 <= 0) c.println ("Error! Please enter a number between 0 and 10"); } while (g1 > 10 \|\| g1 <= 0); { if (g1 == x) { c.println ("You got the number " + g1 + " in " + i + " tries."); break; } else { c.println ("The number you entered is wrong."); } } } } } import java.awt.; import hsa.Console; public class guess { static Console c = new Console (); static public void main (String[] args) { int g1, i = 0; char play; c.clear (); for (int x = 0 ; x <= 10 ; x++) { x = (int) (Math.random () 10) + 0; c.setTextColor (Color.black); i++; do { c.print ("What is your guess? "); g1 = c.readInt (); if (g1 > 10 \|\| g1 <= 0) c.println ("Error! Please enter a number between 0 and 10"); } while (g1 > 10 \|\| g1 <= 0); { if (g1 == x) { c.println ("You got the number " + g1 + " in " + i + " tries."); break; } else { c.println ("The number you entered is wrong."); } } } } } Last edited by Dark Flare Knight; Apr 5th, 2005 at 10:04 AM.

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Programming Forums > Application Development > Java

Number Guessing Game