如何糾正我的哨兵值？

Question

我的代碼應該要求輸入一個名字，請求一個介於1到10之間的數字，從1打印數字到用戶輸入的數字，除了第三個數字應該是 是用戶輸入的名字編程，打印偶數，不斷向用戶詢問數字，直到用戶輸入標記，然後打印輸入的總數。 （我知道，這很多。）我的代碼運行良好，我遇到的唯一問題是最後一部分。即使用戶輸入哨兵（在本例中爲-1），該程序仍要求輸入其他條目。

當我聲明變量或有人可以解釋如何解決我的問題時，我做錯了嗎？這是我的代碼。

import java.util.Scanner; 

/** 
* 
* @author Home 
*/ 
public class NewClass1 { 
    public static void main(String[] args) { 

     int number; 

     Scanner scan = new Scanner(System.in); 
     System.out.print("Enter your name: "); 
     String name = scan.nextLine(); 

     System.out.print("Please enter a number between 1 and 10: "); 
     number = scan.nextInt(); 

//asks for a number between one and ten until I get number within that range, 
     while (number < 1 || number > 10) { 
     System.out.print("No, between 1 and 10: "); 
     number = scan.nextInt(); 
    } 

    for (int i = 1; i <= number; i++) { 
     if (i % 3 == 0) { 
     System.out.print(name + " "); 
    } else { 
     System.out.print(i + " "); 
     } 
    } 
    System.out.println(); 
    for(int i =2; i<=number; i+=2) 
     System.out.print(i + " "); 
     System.out.print("are the even numbers."); 

     final int SENTINEL = -1; 
     int inputNumber; 
     int total = 0; 

     System.out.println(" Enter a number or -1 to finish. "); 
     inputNumber = scan.nextInt(); 

     while (inputNumber != SENTINEL) 
     { 
      total += number; 

      System.out.print("Enter the next number or '-1' to finish. "); 
      number = scan.nextInt(); 
     } 
     System.out.println("The total is " + total); 
    } 
     } 

Answer 1

解決方案：

你從用戶輸入並保存在varible輸入被叫號碼，但你檢查你的，而對inputNumber。

while (inputNumber != SENTINEL) 
    { 
     total += number; 
     System.out.print("Enter the next number or '-1' to finish. "); 
     inputNumber = scan.nextInt(); <<< not number should be inputNumber 
    } 

Answer 2

public class NewClass1 { 

    public static void main(String[] args) { 

     int number; 

     Scanner scan = new Scanner(System.in); 
     System.out.print("Enter your name: "); 
     String name = scan.nextLine(); 

     System.out.print("Please enter a number between 1 and 10: "); 
     number = scan.nextInt(); 

//asks for a number between one and ten until I get number within that range, 
     while (number < 1 || number > 10) { 
      System.out.print("No, between 1 and 10: "); 
      number = scan.nextInt(); 
     } 

     for (int i = 1; i <= number; i++) { 
      if (i % 3 == 0) { 
       System.out.print(name + " "); 
      } else { 
       System.out.print(i + " "); 
      } 
     } 
     System.out.println(); 
     for (int i = 2; i <= number; i += 2) { 
      System.out.print(i + " "); 
     } 
     System.out.print("are the even numbers."); 

     final int SENTINEL = -1; 
     int inputNumber; 
     int total = 0; 


     do { 
      System.out.println(" Enter a number or -1 to finish. "); 
      inputNumber = scan.nextInt(); 
      if(inputNumber!= SENTINEL){ 
       total+=inputNumber; 
      } 
     } while (inputNumber != SENTINEL); 

     System.out.println("The total is " + total); 

    } 
}