feat: Calculate sum of first 'n' natural numbers using while loop with user input

🧠 Logic:
- Take user input `n` for number of terms.
- Initialize `sum = 0` and `counter = 1`.
- Use a `while` loop to add each number from 1 to `n` to `sum`.
- Print the result after the loop ends.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section9ArrayAB/Array 2.0/src/SumOfTheNumbers3.java

@@ -0,0 +1,20 @@
+import java.util.Scanner;
+public class SumOfTheNumbers3 {
+     public static void main(String[] args) {
+         Scanner scanner = new Scanner(System.in);
+
+         System.out.print("Enter the value of n: ");
+         int n = scanner.nextInt();
+
+         int sum = 0;
+         int counter = 1;
+
+         // While loop to calculate the sum
+         while (counter <= n) {
+             sum += counter;        // Add the current number to the sum
+             counter++;
+         }
+         System.out.println("The sum of the first " + n + " natural numbers is: " + sum);
+         scanner.close();
+     }
+ }