Bandomasis I (Salama 2015m)

#include <iostream>
#include <iomanip>
#include <cmath>
#include <fstream>
using namespace std;
const char rezF[] = "U.txt";

int main()
{
    int rezultatas = 0;
    int suma;
    int x, c, v, b;
    for (int i = 1000; i < 10000; i++)
    {
        x = i / 1000;
        c = (i - (1000 * x)) / 100;
        v = (i - (1000 * x) - (100 * c)) / 10;
        b = i % 10;

        suma = x + c + v + b;
        if (suma % 3 == 0)
        {
            rezultatas++;

        }
    }

    ofstream rf(rezF);
    rf << rezultatas << endl;
    rf.close();
    return 0;
}