Adding elements in array

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Java

Hi, i'm trying to add the elements in an array with the one after them, except the last number and then output the numbers. for example:
If the users inputs: 10, 20, 30, 40
It should output: 30, 50, 70, 40
But after trying my code its adding up the first two number and last two numbers but not the middle two.
So its outputting: 30 20 70 40 where the 20 stays the same.
This is my code:

What I have tried:

import java.util.Scanner;
public class StudentScores {
   public static void main (String [] args) {
      Scanner scnr = new Scanner(System.in);
      final int SCORES_SIZE = 4;
      int[] bonusScores = new int[SCORES_SIZE];
      int i;

      for (i = 0; i < bonusScores.length; ++i) {
         bonusScores[i] = scnr.nextInt();
      }

        for (i = 0; i < bonusScores.length; ++i) {
         bonusScores[i] = bonusScores[i] + bonusScores[++i];
      }
 
              
      for (i = 0; i < bonusScores.length; ++i) {
         System.out.print(bonusScores[i] + " ");
      }
      System.out.println();
   }
}