Project Euler challenge #1

gistfile1.cpp

#include <iostream>
using namespace std;

int main () {
  int i = 1000;
  int total = 0;

  while (i--) {
    if (i % 3 == 0 || i % 5 == 0) {
      total += i;
    }
  }

  cout << total;

  return 0;
}