cant save file | Together C & C++ | Page 1

#include <fstream>
#include <iostream>
using namespace std;

class Country {
    public:
        string country;
        int number;
        char grade;

        Country(string inputCountry, int inputNumber, char inputGrade) {
            country = inputCountry;
            number = inputNumber;
            grade = inputGrade;

            cout << "Country : " << country << endl;
            cout << "Number : " << number << endl;
            cout << "Grade : " << grade << endl;


    }

    string stringify() {
        return country + " " + to_string(number) + " " + grade + " "; // Convert 'number' to string using to_string()
    }

    };

class dataBase {
    public:
        ifstream in;
        ofstream out;
        string fileName;

        dataBase(const char* fileName) {
            fileName = fileName;
        }
        
        void write(Country data) {
        cout << "Country : " << data.country << endl;
        cout << "Number : " << data.number << endl;
        cout << "Grade : " << data.grade << endl;

        out.open(fileName, ios::app);
        out << data.stringify() << endl;
        }
};

int main() {
    Country indonesia = Country("Indonesia", 71, 'C');
    dataBase dataBaseCountry = dataBase("latihanDatabase.txt");

    // Code to save data from 'indonesia' to the file 'country.txt'
    dataBaseCountry.write(indonesia);

    return 0;
}```

i cant save output to txt file
#cant save file
