java - 如何输出代码正在运行的循环的哪一次迭代

Question

我有一个关于循环的问题。我正在创建一个计算 Assets 弃用的程序(未知)，并且我正在循环它，因此它运行 4 次。整个代码如下所示

import java.io.*;
import java.util.*;

class  Program108b{

     public static void main(String[] args){
         int [] numbers = {1, 2, 3, 4};
         for(int x: numbers){
             Scanner kb = new Scanner(System.in);

             System.out.print("  Enter price ");
             double price = kb.nextDouble();

             System.out.print("Enter salvage value ");
             double salValue = kb.nextDouble();
             System.out.print("Enter estimated life in years ");
             int years = kb.nextInt();
             double anws = ((price- salValue)/years);
             System.out.print("Here is the depreciated value: " + (Math.round((anws)*100)/100.0));
         }
     }
 }

当特定的运行发生时，我试图让它在代码顶部说“运行#1”，然后“运行#2”，然后“运行#3”，然后“运行#4”。所以现在的输出是

Enter price 2500
Enter salvage value 350
Enter estimated life in years 23
Here is the depreciated value: 93.48  Enter price 23
Enter salvage value 
32
Enter estimated life in years 3
Here is the depreciated value: -3.0  Enter price 2
Enter salvage value 32
Enter estimated life in years 3
Here is the depreciated value: -10.0  Enter price 23
Enter salvage value 2
Enter estimated life in years 3
Here is the depreciated value: 7.0

(输入完全是随机的，我只是想显示输出是什么)我想让输出看起来像这样:

run #1    
Enter price 2500
Enter salvage value 350
Enter estimated life in years 23
Here is the depreciated value: 93.48
run #2
Enter price 23
Enter salvage value 
32
Enter estimated life in years 3
Here is the depreciated value: -3.0 
run #3
Enter price 2
Enter salvage value 32
Enter estimated life in years 3
Here is the depreciated value: -10.0  
run #4
Enter price 23
Enter salvage value 2
Enter estimated life in years 3
Here is the depreciated value: 7.0

所以我的问题是 - 我如何让它说“run #_”，并将每个循环更改为“run #1”、“run #2”等，直到第四次运行？另外，我如何使新的运行开始于新行(此代码中的“输入价格”部分)？

Answer 1

只需在循环开头添加一个System.out.println

for (int x: numbers) {
    System.out.println("run #" + x);
    // Rest of code
}