Project Euler - Problem 1 - Multiples of 3 and 5

p1_projecteuler.cpp

/* 
Project_1.cpp : Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, 
we get 3, 5, 6 and 9. The sum of these multiples is 23.
Find the sum of all the multiples of 3 or 5 below 1000.
*/

#include <iostream>
using namespace std;

int main()
{
	int sum = 0; // initialize sum
	for (int i = 0; i < 1000; i++) // below 1000
	{
		if (i % 3 == 0 || i % 5 == 0) // multiples of 3 or (||) 5
		{
			sum += i; // add the number to the sum
		}
	}

	cout << "The sum is: " << sum << endl; // print sum

    return 0;
}