Day13.java

/*
Day 13 coding Statement:  Write a program to find Sum of N natural numbers

Description

Get the input from the user for the value of n and then find the sum of first n natural numbers.

e.g. let the n value = 5

then first 5 natural numbers are 1,2,3,4,5 for which we need to find the sum

Therefore sum of first 5 natural numbers is 1+2+3+4+5 = 15

Input

4

Output

10

*/
import java.util.*;
public class Day13
{
	public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    int n;
	    System.out.println("Enter a number : ");
	    n=sc.nextInt();
	    int sum=(int)n*(n+1)/2;
	    System.out.println("The sum of first "+n+" natural numbers are : "+sum);
	    
	}
}