对于循环打印数组中的值总和一次，不断重复

Question

I am aiming to create a method which prints the total cost of all employees that are added to an array. Salary is added to the array using:

**Scanner sal = new Scanner(System.in);      
        System.out.println("Enter annual employee salary $");
        int salary = sal.nextInt();
        salaryArray[index] = salary;

        index++;**  

I then use the following to get the sum:

  public static void cost()
  {
    int sum = 0;

    for (int i = 0; i < salaryArray.length; ++i)
    {
      System.out.println(sum += salaryArray[i]);
    }
  }

The problem is it prints out the result multiple times, I would like it to print only once, giving only one result. Further changes seem to break my code when I try to fix it.

Answer 1

For each salary added you print the current sum.
You want to print the sum after the loop. So do that

As improvement, you could use a more meaningful name for the method as method names should generally start by an infinitive verb.
You could also use an enhanced for as the index variable is only used to iterate every element. The enhanced for provides it in a cleaner way.

 public static void displayCost()  {
    int sum = 0;    
    for (int salary : salaryArray){
      sum += salary;
    }
    System.out.println(sum);
  }

Answer 2

public static void cost()
  {
    int sum = 0;

    for (int i = 0; i < salaryArray.length; ++i)
    {
      sum += salaryArray[i];
    }
System.out.println(sum);

  }

Just show sum variable once .

Answer 3

You are printing the result in a for loop, of course it would print multiple times. why not try this;

for(int i = 0; i < salaryArray.length; i++){
sum += salaryArray[i];//getting the value of the sum first
}
System.out.println(sum);