Hi guys,

I want to find the sum of numbers(inclusive) between TWO integers inputted by user.

Example: if user enters 1 and 4, then it outputs: Sum = 10

I just started my code:

``````public static void main(String[] args) {
int number1 = 0,number2 = 0,Sum = 0;
Scanner input = new Scanner(System.in);
System.out.print("first integer:");
number1 = input.nextInt();
System.out.print("second integer:");
number2 = input.nextInt();

}``````

How can I do it? Do I have to use loops?

## All 2 Replies

You don't need to use loops.
You can

``System.out.println(number1+number1+number2+number2);``

unless you need to create a function.

``````private static int sumInclusive(int number1, int number2)
{
return number1+number1+number2+number2;
}``````

well known method:

(( 1stNumber + 2ndNumber ) * numberOfNumbers) / 2

eg. 1st Number = 4 2nd = number 8

( ( 4 + 8 ) * ( 8 - 4 + 1 ) ) / 2
( 12 * 5 ) / 2
= 30

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