#include <iostream>
    using namespace std;
    void Sequence(int StopN)
    {
        int N;
        N = 3;
        while (true)
        {
            if (N >= StopN)
                throw N;
            cout << N << endl;
            N++;
        }
    }
    int main(void)
    {
        try
        {
            Sequence(4);
        }
        catch(int ExN)
        {
            cout << "exception: " << ExN << endl;
        }
        return 0;
    }