Write a C++ program that asks the user for a positive integer value. The program should

use a loop to get the sum of the all the integers from 1 up to the number entered. For

example, if the user enters 50, the loop will find the sum of 1, 2, 3, 4, ... 50.

Input validation: Do not accept a negative starting number. If a negative value is

entered, prompt the used to reenter the value as many times as necessary.

Make sure to include the pseudocode between (/* comment */) on the top of your

program