胡扯遊戲：我如何從這個代碼中進入無限循環的while循環？

Question

這是解釋遊戲的註釋，所以你可以測試它，但主要問題是當你想運行while循環時，如果你有一個點值，那麼它就成爲一個無限循環。我如何讓它不是一個無限循環？

import java.util.Random; 

public class Craps { 
    private int roll1; 
    private int roll2; 
    private Random randGen; 
    private int sum; 
    private int thePoint = sum; 
    private int bet; 
    private int newSum; 

    // instance classes 
    public Craps() { 
     randGen = new Random(); // this is the random generator 
    } 

    // when you win you double your money 
    // when you lose you lose everything 
    public void roll(int bet) { // you can bet as much money as you want 
     roll1 = (randGen.nextInt(6) + 1); 
     roll2 = (randGen.nextInt(6) + 1); 
     sum = roll1 + roll2; // you must add the two rolls and that is your sum 
     if (sum == 2 || sum == 3 || sum == 12) { // if the sum is 2 you lose 
      System.out.println("The sum is 2. You Lose!"); 
      System.out.println("Your credit:" + " " + bet * 0); 
     } else if (sum == 7 || sum == 11) { // if it 7 you win 
      System.out.println("The sum is 7. You Win!"); 
      System.out.println("Your credit:" + " " + bet * 2); 
     } else { 
      System.out.println("You rolled a" + " " + sum + ". " + "That is your point. Roll  again."); 
      sum = thePoint; 

     } 
    } 

    public void rollAgain() { 

     while (sum != 7 || sum != thePoint) { // whatever the the sum is that is not one of the numbers above becomes your point. 
      roll1 = (randGen.nextInt(6) + 1);// you must role the die again until you get your point again the you win or until you get a 7 and then you lose. 
      roll2 = (randGen.nextInt(6) + 1); 
      sum = roll1 + roll2; 
      if (thePoint == sum) { // if the point equals the sum you win 
       System.out.println("You're on point. You Win!"); 
       System.out.println("Your credit:" + " " + bet * 2); 
      } else if (sum == 7) { // if it equals 7 you lose. 
       System.out.println("You got a 7. You lose!"); 
       System.out.println("Your credit:" + " " + bet * 0); 
      } 
     } 
    } 
} 

Answer 1

您需要更改環路條件。

while (sum != 7 || sum != thePoint)這裏發生的事情是，只要滿足第一個條件（總和不是7），循環開始執行。

如果將其更改爲while (sum != 7 && sum != thePoint)，則需要滿足這兩個條件 - 如果總和不是7或值爲thePoint，則循環只會再次開始執行。