How do I output which iteration of a loop the code is running

Question

I have a question about loops. I am creating a program that calculates the deprecation of an asset(It is unknown), and I am looping it so it runs 4 times. The whole code looks like this

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));
         }
     }
 }

I am trying to make it say "run #1", then "run #2", then "run #3", and then "run #4" at the top of the code when that certain run happens. So right now the output is

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

(The input is totally random, I just wanted to show what the output is) I want to make the output look like this:

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

So my question is- how would I make it say "run #_", and have it change each loop to "run #1", "run #2", etc until the forth run? Also, how would I make the start of a new run begin on a new line (the "enter price" part in this code)?

Answer 1

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

class  Program108b{

     public static void main(String[] args){
         int [] numbers = {1, 2, 3, 4};
         for(int x: numbers){
              System.out.print("run #_" + x);
             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));
         }
     }
 }

or create a variable and add 1 to it on every iteration

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

class  Test1{

     public static void main(String[] args){
         int [] numbers = {1, 2, 3, 4};
         int iteration = 0;
         for(int x: numbers){
             System.out.println("run #"+ ++iteration);
             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));
         }
     }
 }

Answer 2

Try this -

import java.io.*;
import java.util.*;
class  Program108b {
  public static void main(String[] args) {
    int [] numbers = {1, 2, 3, 4};
    for(int x: numbers){
      System.out.println("run #" + x);    /// Add this
      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));
    }
  }
}

Answer 3

Simply add a System.out.println at the beginning of loop

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