我这里有点麻烦。我正在制作一个数学程序，询问用户在数学问题中使用的位数。然后它会询问数学问题的类型，并询问用户 10 个问题。它会检查答案是否正确并显示适当的消息。如果错误，用户可以永远重试该问题。然后它会计算他们的得分是否超过 75% 并显示一条消息。
所有的弹出窗口都可以正常工作，但无论出于何种原因，它一直告诉我无论我输入什么答案都是错误的。我试图确保所有变量类型都匹配（双打），这样响应就不会有任何转换问题，但我是 Java 新手，所以我不知道我是否正确地做到了。
你们有没有机会发现我的代码的问题？任何帮助是极大的赞赏。感谢观看。
还要感谢那些已经在这个项目中帮助我解决其他问题的人，我仍在学习 Java！
import java.util.*;
import javax.swing.JOptionPane;
/**
*
*/
/**
* @author Tyler
*
*/
public class Program {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
int difficulty = 1;
String[] operators = {"plus", "minus", "times", "divided by"};
int selectedOperator = 1;
int correctAnswers = 0;
int answeredTyped = 0;
int difficultyInput = Integer.parseInt(JOptionPane.showInputDialog("Please choose the difficulty. Enter the number of digits to use in each problem."));
if (difficultyInput > 0) {
difficulty = difficultyInput;
}
int arithmeticMethod = Integer.parseInt(JOptionPane.showInputDialog("Choose an arithmetic problem to study: 1 = Addition Only, 2 = Subtraction Only, 3 = Multiplication Only, 4 = Division Only, 5 = Random Problems" ));
selectedOperator = arithmeticMethod;
new Program().askQuestion(difficulty, null, arithmeticMethod, arithmeticMethod, operators, arithmeticMethod); }
public static boolean checkResponse (double primaryInt, double secondaryInt, String operatorText, double response){
if (operatorText.equals("1")){
return (primaryInt + secondaryInt) == response;
}
else if (operatorText.equals("2")){
return (primaryInt - secondaryInt) == response;
}
else if (operatorText.equals("3")){
return (primaryInt * secondaryInt) == response;
}
else if (operatorText.equals("4")){
return (primaryInt / secondaryInt) == response;
}
return false;
}
public static String displayResponse (boolean isCorrect){
int randomIndex = (int) (Math.floor(Math.random() * (4 - 1 + 1)) + 1);
switch (randomIndex){
case 1:
return isCorrect ? "Very Good!" : "No. Please try again.";
case 2:
return isCorrect ? "Excellent!" : "Wrong. Try once more.";
case 3:
return isCorrect ? "Nice Work!" : "Don\'t give up!";
case 4:
return isCorrect ? "Keep up the good work!" : "No. Keep trying.";
}
return "Oops...";
}
public static void askQuestion(int difficulty, String operatorText, int selectedOperator, int answeredTyped, String[] operators, int correctAnswers){
boolean correctAnswer = false;
double primaryInt = Math.floor(Math.pow(10, difficulty-1) + Math.random() * 9 * Math.pow(10, difficulty-1));
double secondaryInt = Math.floor(Math.pow(10, difficulty-1) + Math.random() * 9 * Math.pow(10, difficulty-1));
operatorText = (selectedOperator == 5) ? operators[(int) Math.floor(Math.random() * operators.length)] : operators[selectedOperator - 1];
while(!correctAnswer && answeredTyped < 10) {
double response = Double.parseDouble (JOptionPane.showInputDialog("How much is " + primaryInt + " " + operatorText + " " + secondaryInt + "?"));
correctAnswer = checkResponse (primaryInt, secondaryInt, operatorText, response);
JOptionPane.showMessageDialog(null, displayResponse(correctAnswer));
answeredTyped++;
if(correctAnswer)
correctAnswers++;
}
{
while(answeredTyped < 10){
askQuestion(0, null, 0, 0, null, 0);
}
if((correctAnswers / answeredTyped) >= 0.75) {
JOptionPane.showMessageDialog(null, "Congratulations, you are ready to go on to the next level!");
}
else{
JOptionPane.showMessageDialog(null, "Please ask your teacher for extra help.");
}
}
}
}