如何纠正我的哨兵值？

Question

我的代码应该要求输入一个名字，请求一个介于1到10之间的数字，从1打印数字到用户输入的数字，除了第三个数字应该是 是用户输入的名字编程，打印偶数，不断向用户询问数字，直到用户输入标记，然后打印输入的总数。 （我知道，这很多。）我的代码运行良好，我遇到的唯一问题是最后一部分。即使用户输入哨兵（在本例中为-1），该程序仍要求输入其他条目。

当我声明变量或有人可以解释如何解决我的问题时，我做错了吗？这是我的代码。

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

解决方案：

你从用户输入并保存在varible输入被叫号码，但你检查你的，而对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); 

    } 
}