負の数を挿入した場合を除いて、whileループが再起動しているようですか？

Question

私のwhileループは、負の数を入力するまでうまく動作しますが、何が間違っていますか？負の数を入力すると、ループが停止し、コードの実行が終了します。ループ全体を再起動して、budgetRemainingが0になるまで入力を続けることができます。私は助けてくれてありがとう！

Scanner enterPrice = new Scanner(System.in); 
    double budgetRemaining = 100; 
    double itemPrice; 

    System.out.println("Please enter price of item:"); 
    itemPrice = enterPrice.nextDouble(); 

    if (itemPrice < budgetRemaining) { 
     budgetRemaining -= itemPrice; 

     if (itemPrice < 0) { 
      budgetRemaining += itemPrice; 
      System.out.println("Sorry, you have entered an invalid amount."); 

     } while (budgetRemaining > 0 && itemPrice >= 0) { 
      System.out.println("You have a remaining budget of $" + budgetRemaining + ". Please enter price of item:"); 
      System.out.println(itemPrice = enterPrice.nextDouble()); 

      if (itemPrice < budgetRemaining) { 
       budgetRemaining -= itemPrice; 

       if (itemPrice < 0) { 
        budgetRemaining += itemPrice; 
        System.out.println("Sorry, you have entered an invalid amount. "); 
       } 


      } else if (itemPrice > budgetRemaining) { 
       System.out.println("Sorry, your item exceeds your budget."); 
      } 

      if (itemPrice == budgetRemaining) { 
       budgetRemaining = 0; 
       System.out.println("You have reached your maximum budget. Thank you for shopping with us!"); 
      } 
     } 
    } 

Answer 1

あなたはitemPriceが0未満