SumOfInput/Main.java

 
import java.util.Scanner;
/**
 * Created by iyasuwatts on 10/17/17.
 */
public class Main {

    public static void main(String[] args){
    Scanner in = new Scanner(System.in);
    System.out.println("Please inuput a number");   
    int num1 = in.nextInt();
    int sum1 = 0;
    for (int i = 0; i <= num1; i++){
         sum1 += i;}
    System.out.println("the sum is " + sum1);
    
}
}