ZCW-SumOfInput-BlueJ/Main.java

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("Enter a number: ");
        int userNum = input.nextInt();
        int addNum = 0;
        for (int i = 1; i <= userNum; i++) {
            addNum = addNum + i;
        }
        System.out.println(addNum);
    }
}