Someone

cout << "Izbral si izpis sestavin." << endl;
            
            ifstream dat ("sestavine.txt", ios::in);
            if (dat.is_open())
            {
                while( !dat.eof() )
                {
                    getline(dat, vrstica);
                    for( int i = 0; i < st_sestavin; i++ )
                    {
                        dat << "Ime sestavin: " << b[i].ime << endl;
                        dat << "ime_proiz sestavin: " << b[i].ime_proiz << endl;
                        dat << "Cena za kos sestavin sestavin: " << b[i].cenasestavine << endl;
                        dat << "Drzava porekla sestavin: " << b[i].ime_trgovine << endl << endl;    
                    }
                    cout << vrstica << endl;       
                }
                cout << "Branje uspesno zakljuceno!" << endl;