#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <iostream>

using namespace std;

int IsMultiple(int nmbr, int mtpl)
{

        int yesno = 0;
        double multiplier = floor((double)nmbr / (double)mtpl);
        int temp = mtpl * (int)multiplier;

        if (temp == nmbr)
        {
                yesno = 1;
        }

        return yesno;
}

int main(int argc, const char* argv[])
{
        int total = 0;
        int top = 1000;

        if (argc > 1)
        {
                top = atoi(argv[1]);
        }

        for (int x = 1; x < top; x++)
        {
                int three = 0, five = 0;

                three = IsMultiple(x, 3);
                five = IsMultiple(x, 5);

                if (three == 1 || five == 1)
                {
                        total = total + x;

                        cout << x << " is a multiple of 3 or 5." << endl;
                }
        }

        cout << "All those multiples below " << top << " equal: " << total << "." << endl;

        return 0;
}