Java program to calculate sum of number from 1 to user input using for loop

import java.util.*; public class SumUsingForLoop { public static void main(String[] args) { Scanner s=new Scanner(System.in); int sum = 0; System.out.println("Enter the number"); int num=s.nextInt(); for(int i = 1; i <= num; ++i) { sum += i; } System.out.println("Sum of number starting from 1 to "+num+" = " + sum); } }