英文:
Why will pressing 'false' not break this java loop?
问题
我已经尝试了中断和将 `==` 更改为 `!=`。这仅是一个逻辑错误，因为除了循环永远不会结束外，其他所有操作都有效。
import javax.swing.JOptionPane;
import java.lang.Math;
public class NumGuess {
public static void main(String[] args) {
boolean anotherGame = true;
int random = (int) (Math.random() * (20 - 0 + 1) + 0);
int guesses = 5;
int userGuess = -1;
anotherGame = true;
int invGuess = 0;
while (anotherGame == true) {
guesses = 5;
userGuess = -1;
random = (int) (Math.random() * (20 - 0 + 1) + 0);
invGuess = 0;
while (random != userGuess && guesses > 0) {
userGuess = Integer.parseInt(JOptionPane.showInputDialog("Enter a number between 0 and 20."));
while (userGuess < 0 || userGuess > 20) {
System.out.println("Enter an integer between 0 and 20.");
userGuess = Integer.parseInt(JOptionPane.showInputDialog("Enter a number between 0 and 20."));
invGuess++;
}
guesses--;
if (random > userGuess) {
System.out.println("Higher!");
System.out.println("You have " + guesses + " tries left.");
} else if (random < userGuess) {
System.out.println("Lower!");
System.out.println("You have " + guesses + " tries left.");
} else {
System.out.println("You guessed correctly!");
}
}
if (guesses == 0 && random != userGuess) {
System.out.println("You have run out of guesses! The correct number was " + random + " .");
}
System.out.println("You had " + invGuess + " invalid guesses.");
int anotherGameInt = JOptionPane.showConfirmDialog(null,
"Play again?", "Please select",
JOptionPane.YES_NO_OPTION);
if (anotherGameInt == 1) {
anotherGame = true;
} else {
anotherGame = false;
}
}
}
}
英文:
I have tried breaks and changing the == to a !=. This is a logic error purely, as everything works apart from the loop never ending.
import javax.swing.JOptionPane;
import java.lang.Math;
public class NumGuess
{
public static void main(String [] args){
boolean anotherGame = true;
int random = (int)(Math.random()*(20-0+1)+0);
int guesses = 5;
int userGuess = -1;
anotherGame = true;
int invGuess = 0;
while(anotherGame == true){
guesses = 5;
userGuess = -1;
random = (int)(Math.random()*(20-0+1)+0);
invGuess = 0;
while(random != userGuess && guesses > 0){
userGuess = Integer.parseInt(JOptionPane.showInputDialog("Enter a number between 0 and 20."));
while (userGuess < 0 || userGuess > 20){
System.out.println("Enter an integer between 0 and 20.");
userGuess = Integer.parseInt(JOptionPane.showInputDialog("Enter a number between 0 and 20."));
invGuess++;
}
guesses--;
if (random > userGuess){
System.out.println("Higher!");
System.out.println("You have "+guesses+" tries left.");
}else if(random < userGuess){
System.out.println("Lower!");
System.out.println("You have "+guesses+" tries left.");
}else{
System.out.println("You guessed correctly!");
}
}
if (guesses == 0 && random != userGuess){
System.out.println("You have run out of guesses! The correct number was "+random+" .");
}
System.out.println("You had "+invGuess+ "invalid guesses.");
int anotherGameInt = JOptionPane.showConfirmDialog(null,
"Play again?", "Please select",
JOptionPane.YES_NO_OPTION);
if (anotherGameInt == 1){
anotherGame = true;
}else{
anotherGame = false;
}
}
}
答案1
得分: 4
JOptionPane.showConfirmDialog(null,
"Play again?", "Please select",
JOptionPane.YES_NO_OPTION);
returns JOption.YES_OPTION (1) for Yes and JOption.NO_OPTION (0) for no.
You can verify that with a System.out.println(anotherGameInt); after the call
<details>
<summary>英文:</summary>
JOptionPane.showConfirmDialog(null,
"Play again?", "Please select",
JOptionPane.YES_NO_OPTION);
returns ```JOption.YES_OPTION``` (1) for Yes and ```JOption.NO_OPTION``` (0) for no.
You can verify that with a ```System.out.println( anotherGameInt );``` after the call
</details>
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论