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Thread: loop , passed and failed

  1. #1
    Java kindergarten chronoz13's Avatar
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    Default loop , passed and failed

    this program is an example of how a grade should compute
    heres the code

    /*
     * To change this template, choose Tools | Templates
     * and open the template in the editor.
     */
     
    package ConsoleApplicationsSamples;
     
    /**
     *
     * @author Administrator
     */
    import java.util.*;
    public class Sample
     
    {
        private static Scanner scanner = new Scanner(System.in);
     
        public static void main(String[] args)
     
        {
            int grades,
                keyIn;
     
            keyIn = 1;
     
            do
            {
                System.out.print("Enter the grades: 1 for passed / 0 for failed");
                grades = scanner.nextInt( );
     
     
                if(grades == 1)          
                    System.out.println("PASSED");         
     
                else if (grades == 0)           
                    System.out.println("FAILED");
     
                else if(grades > 1)          
                    System.exit(0);
     
                keyIn ++;
     
            }
            while(keyIn <= 10);
     
            if(grades <= 7)
                System.out.println("Stubborn");                  //if i entered 7 time the it should print this
     
     
            else if(grades >= 8)
                System.out.println("NAKS SIPAG MAG ARAL AHH");    // but if i entered greater than 7 times then it 
                                                                                                      // should print this
     
        }
     
    }


    the looping of the input is fine , the selection inside the loop is still fine...

    but the problem is the condition outside the loop, no matter how many 1(passed) or 0(failed) I enter
    it only prints the first condition ("Stubborn") it always ignore the second one.

    need help regarding this matter.. tnx a lot again


  2. #2
    Senile Half-Wit Freaky Chris's Avatar
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    Default Re: loop , passed and failed

    thats because you only ever allow te variable grades to be 1 or 0, so it cannot be greater than 7

    Chris
    chris[at]javaprogrammingforums[dot]com

    Prifysgol Bangor University, North Wales

  3. #3
    Super Moderator Json's Avatar
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    Default Re: loop , passed and failed

    Maybe you had something like this in mind.

    /*
     * To change this template, choose Tools | Templates
     * and open the template in the editor.
     */
     
    package ConsoleApplicationsSamples;
     
    /**
     *
     * @author Administrator
     */
    import java.util.*;
    public class Sample
    {
        private static Scanner scanner = new Scanner(System.in);
     
        public static void main(String[] args)
        {
            int grades,
                keyIn;
     
            keyIn = 1;
     
            do
            {
                if(keyIn == 7) {
                    System.out.println("Stubborn");                  //if i entered 7 time the it should print this
                }
                else if(keyIn >= 8) {
                    System.out.println("NAKS SIPAG MAG ARAL AHH");    // but if i entered greater than 7 times then it 
                }                                                                                        // should print this
     
                System.out.print("Enter the grades: 1 for passed / 0 for failed");
                grades = scanner.nextInt( );
     
                 keyIn ++;
            }
            while((grades < 0) || (grades > 1));
     
            if(grades == 1) {
                System.out.println("PASSED");
            }
            else if (grades == 0) {
                System.out.println("FAILED");
            }
        }
    }

    By the way, a tip when it comes to using System.exit, the integer status code you pass in should be non zero if abnormal termination, like the user put in the wrong argument otherwise zero if normal termination as in the program reached its destination.

    // Json

  4. #4
    Java kindergarten chronoz13's Avatar
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    Default Re: loop , passed and failed

    sori i didnt make things clear,heres the code again.

    import java.util.*;
    public class Sample
     
    {
        private static Scanner scanner = new Scanner(System.in);
     
        public static void main(String[] args)
     
        {
            int grades,
                keyIn;
     
            keyIn = 1;
     
            do
            {
                System.out.print("Enter the grades: 1 for passed / 0 for failed: ");
                grades = scanner.nextInt( );
     
     
                if(grades == 1)          
                    System.out.println("PASSED");         
     
                else if (grades == 0)           
                    System.out.println("FAILED");
     
                else if(grades > 1)          
                    System.exit(0);
     
                keyIn ++;
     
            }
            while(keyIn <= 10);
     
            if(grades <= 7)
                System.out.println("7 below total ofgrades are failed");                
     
            else if(grades >= 8)
                System.out.println("Above 8 you can proceed to next Level");:-*    
     
        }
     
    }

    the output should be like this


    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 0
    Enter the grades: 1 for passed / 0 for failed: 0
    Enter the grades: 1 for passed / 0 for failed: 0

    7 below total ofgrades are failed

    ---

    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 1
    Enter the grades: 1 for passed / 0 for failed: 0

    Above 8 you can proceed to next Level

    -----
    the problem with the output is . it only prints the first condition, this one.
    if(grades <= 7)
    System.out.println("7 below total ofgrades are failed");


    the program is not selecting the second condition even if i entered it the right way..
    but it reads the first one..

  5. #5
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    Default Re: loop , passed and failed

    It sounds like you need a variable to store the number of passing grades in. When the loop is over, you can then put that variable into your conditionals.

    Edit: Because you are always entering either a 0 or a 1, the first "if" conditional will always print.

    import java.util.*;
    public class Sample
     
    {
        private static Scanner scanner = new Scanner(System.in);
     
        public static void main(String[] args)
     
        {
            int grades,
                keyIn;
           [B][U]int passCount=0;[/U][/B]
     
            keyIn = 1;
     
            do
            {
                System.out.print("Enter the grades: 1 for passed / 0 for failed: ");
                grades = scanner.nextInt( );
     
     
               if(grades == 1)[B][U]{[/U][/B]          
                    System.out.println("PASSED");
                   [U][B] passCount++;[/B][/U]
    [B][U]}[/U][/B]        
     
                else if (grades == 0)           
                    System.out.println("FAILED");
     
                else if(grades > 1)          
                    System.exit(0);
     
                keyIn ++;
     
            }
            while(keyIn <= 10);
     
            [B][U]if(passCount <= 7)[/U][/B]
                System.out.println("7 below total ofgrades are failed");                
     
           [B][U] else if(passCount>= 8)[/U][/B]
                System.out.println("Above 8 you can proceed to next Level");:-*    
     
        }
     
    }
    Last edited by cfmonster; August 24th, 2009 at 02:07 PM.

  6. The Following User Says Thank You to cfmonster For This Useful Post:

    chronoz13 (August 26th, 2009)

  7. #6
    Java kindergarten chronoz13's Avatar
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    Default Re: loop , passed and failed

    ahh i get it cfmonster.. it always print because "0" and "1" are less than "7"(seven)

    thats why it always print the first condition!!

    and everytime that i INPUT "1" it doesnt add nor increment, and the value of "1" stays one.. even the next "1"s(ones)

    am i right sir?


    tnx sir!!!! tnx cfmonster!!!

    what a monster..
    Last edited by chronoz13; August 25th, 2009 at 07:06 AM.

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