Задача с бири за if else

#include <iostream>
using namespace std;

int main()
{
    int broi_biri;
    double cena_bira, suma_djob;

    cout << "Programa za hodene na bar!" << endl;

    cout << "Kolko pari imash v djoba ";
    cin >> suma_djob;

    cout << "Cena na edna bira ";
    cin >> cena_bira;

    cout << "Kolko biri iskash da izpiesh ";
    cin >> broi_biri;

    if ( broi_biri * cena_bira  <= suma_djob )
    {
        cout << "Parite ti stigat, shte poharchish " << broi_biri * cena_bira;
        cout << " leva i shte ti ostane resto ";
        cout << suma_djob - broi_biri * cena_bira << " leva." << endl;
    }
    else
    {
        cout << "Parite ne ti stigat, iskash da poharchish ";
        cout << broi_biri * cena_bira << ", obadi se na tati za ";
        cout <<  broi_biri * cena_bira - suma_djob << " leva." << endl;
        if (cena_bira < suma_djob)
        {
            cout << "Vse pak mozhesh da izpiesh ";
            cout << int(suma_djob / cena_bira) << " biri i da ti ostanat ";
            cout << suma_djob - int(suma_djob / cena_bira)*cena_bira;
            cout << " leva." << endl;
        }
    }

}