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Thread: how to loop correctly this program

  1. #1
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    Wink how to loop correctly this program

    import javax.swing.*;
    import java.awt.Container;
    import java.math.*;

    public class arithmetic extends JApplet {

    public void init() {

    String input = JOptionPane.showInputDialog
    ("Select an option (1(multiply),2(divide),3(add),4(subtract))");
    int input2 = Integer.parseInt(input);
    int choice = input2;


    switch (choice) {

    case 1:
    for (int x = 1; x < 2; x++) {
    int i = 1;
    while( i < 2) {
    double number1 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number1,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number2 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number2,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String numberx = JOptionPane.showInputDialog("Enter result");
    double number3 = Double.parseDouble(numberx);
    double result = number1 * number2;

    if (result == number3) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    }

    case 2:
    for (int x = 1; x < 2; x++) {
    double number4 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number4,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number5 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number5,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String number7 = JOptionPane.showInputDialog("Enter result");
    double number6 = Double.parseDouble(number7);
    double result2 = Math.round(number4 / number5);


    if (result2 == number6) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    case 3:
    for (int x = 1; x < 2; x++) {
    double number8 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number8,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number9 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number9,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String number10 = JOptionPane.showInputDialog("Enter result");
    double number11 = Double.parseDouble(number10);
    double result3 = number8 + number9;


    if (result3 == number11) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    case 4:
    for (int x = 1; x < 2; x++) {
    double number12 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number12,null,J OptionPane.
    INFORMATION_MESSAGE);
    double number13 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number13,null,J OptionPane.
    INFORMATION_MESSAGE);
    String number14 = JOptionPane.showInputDialog("Enter result");
    double number15 = Double.parseDouble(number14);
    double result4 = number12 - number13;


    if (result4 == number15) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);


    }
    }


    }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: how to loop correctly this program

    Please edit your post and wrap your code with code tags:
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.

    Can you explain the problem you are having?
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Junior Member
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    Default Re: how to loop correctly this program

    [code = java]
    import javax.swing.*;
    import java.awt.Container;
    import java.math.*;

    public class arithmetic extends JApplet {

    public void init() {

    String input = JOptionPane.showInputDialog
    ("Select an option (1(multiply),2(divide),3(add),4(subtract))");
    int input2 = Integer.parseInt(input);
    int choice = input2;


    switch (choice) {

    case 1:
    for (int x = 1; x < 2; x++) {
    int i = 1;
    while( i < 2) {
    double number1 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number1,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number2 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number2,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String numberx = JOptionPane.showInputDialog("Enter result");
    double number3 = Double.parseDouble(numberx);
    double result = number1 * number2;

    if (result == number3) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    }

    case 2:
    for (int x = 1; x < 2; x++) {
    double number4 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number4,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number5 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number5,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String number7 = JOptionPane.showInputDialog("Enter result");
    double number6 = Double.parseDouble(number7);
    double result2 = Math.round(number4 / number5);


    if (result2 == number6) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);

    }
    case 3:
    for (int x = 1; x < 2; x++) {
    double number8 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number8,null,JO ptionPane.
    INFORMATION_MESSAGE);
    double number9 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number9,null,JO ptionPane.
    INFORMATION_MESSAGE);
    String number10 = JOptionPane.showInputDialog("Enter result");
    double number11 = Double.parseDouble(number10);
    double result3 = number8 + number9;


    if (result3 == number11) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    case 4:
    for (int x = 1; x < 2; x++) {
    double number12 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number12,null,J OptionPane.
    INFORMATION_MESSAGE);
    double number13 = Math.floor(Math.random() * 13);
    JOptionPane.showMessageDialog(null,number13,null,J OptionPane.
    INFORMATION_MESSAGE);
    String number14 = JOptionPane.showInputDialog("Enter result");
    double number15 = Double.parseDouble(number14);
    double result4 = number12 - number13;


    if (result4 == number15) {
    JOptionPane.showMessageDialog(null,"correct",null,
    JOptionPane.INFORMATION_MESSAGE);
    }
    else
    JOptionPane.showMessageDialog(null,"wrong",null,
    JOptionPane.INFORMATION_MESSAGE);


    }
    }


    }
    }
    [/code]

    I am trying to loop 3 times; however the third time I loop, the answer is 99% wrong although the answer is correct.

    Eric

  4. #4
    Super Moderator Norm's Avatar
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    May 2010
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    Default Re: how to loop correctly this program

    Did you look at the code you just posted? Was it formatted?
    The statements should NOT all start in the first column. Nested statements need to be indented.

    the answer is 99% wrong although the answer is correct.
    Please explain how that works. 99% wrong and correct
    If you don't understand my answer, don't ignore it, ask a question.

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