Как сделать функцию класса для записи информации в файл?

#include <string>
#include "Rastenie.h"
#include "Derevo.h"
#include <fstream>
using namespace std;
int main() {    
    cout << "Please, enter date of boarding and date of last day, also enter the height and name of plant" << endl;
    int db, mb, yb, dl, ml, yl, h;
    string name;
    cin >> db >> mb >> yb >> dl >> ml >> yl >> h;
    while (getchar() != '\n');
    getline(cin, name);
    Derevo a(db, mb, yb, name, h);
    a.printAllt(yl,ml,dl);
    a.getAge(yl,ml,dl);
    Rastenie* r = new Derevo();
    delete r;
    return 0;
}

#include <iostream>
#include <fstream>
#include "Rastenie.h"
#pragma once
class Derevo : public Rastenie
{
private:
    int height;
    int getHeight() {
        return height;
    }
public:
    Derevo():Derevo(1,1,2001,"ogurec",10) {
    }
 
    Derevo(int db, int mb, int yb, std::string n, int h) : Rastenie(db,mb,yb,n) {
        height = h;
    }
    void setHeight(int h) {
        height = h;
    }
    void printAllt(int yl, int ml, int dl) {
        printAll(yl, ml,dl);
        std::cout <<std::endl<< "Height=" << getHeight() <<std::endl;
    }
    ~Derevo(){
        std::cout << "Destructor ~Derevo was called\n";
    };
 
};

#include <iostream>
#include <ctime>
#include <string>
#include <fstream>
#pragma once
class Rastenie
{
protected:
    tm boardDate;
    std::string name;
    int getDayB() {
        return boardDate.tm_mday;
    }
    int getMonthB() {
        return boardDate.tm_mon;
    }
    int getYearB() {
        return boardDate.tm_year;
    }
    std::string getName() {
        return name;
    }
public:
    Rastenie() {
        boardDate.tm_mday = 1;
        boardDate.tm_mon = 1;
        boardDate.tm_year = 2001;
        name = "ogurec";
    }
    Rastenie(int db, int mb, int yb, std::string n) {
        boardDate.tm_mday = db;
        boardDate.tm_mon = mb;
        boardDate.tm_year = yb;
        name = n;
        boardDate.tm_year -= 1900;
        boardDate.tm_mon -= 1;
        boardDate.tm_hour = 0;
        boardDate.tm_min = 0;
        boardDate.tm_sec = 0;
        boardDate.tm_isdst = 0;
        boardDate.tm_wday = 0;
        boardDate.tm_yday = 0;
    }
    void setDayB(int db) {
        boardDate.tm_mday = db;
    }
    void setMonthB(int mb) {
        boardDate.tm_mon = mb;
    }
    void setYearB(int yb) {
        boardDate.tm_year = yb-1900;
    }
    void setName(std::string n) {
        name = n;
    }
    void printAll(int yl,int ml,int dl) {
        std::cout << "Name " << getName() << std::endl;
        std::cout << "Boarding date " << "Day=" << getDayB() << " Month=" << getMonthB()+1 << " Year=" << getYearB()+1900 << std::endl;
        std::cout << "Last date" << " Day=" << dl << " Month=" << ml << " Year=" << yl << std::endl;
        std::cout << "DayLife=" << getAge(yl, ml, dl)<<" ";
 
    }
    double getAge(int yl, int ml, int dl) {
        tm lastDate;
        lastDate.tm_year = yl-1900;
        lastDate.tm_mon = ml-1;
        lastDate.tm_mday = dl;
        lastDate.tm_hour = 0;
        lastDate.tm_min = 0;
        lastDate.tm_sec = 0;
        lastDate.tm_isdst = 0;
        lastDate.tm_wday = 0;
        lastDate.tm_yday = 0;
 
        time_t t1 = mktime(&boardDate);
        time_t t2 = mktime(&lastDate);
        double s = difftime(t2, t1) / 24 / 3600;
        return s;
    }
 
    ~Rastenie() {
        std::cout << "Destructor ~Rastenie was called\n";
    }
};

    void printAll(int yl,int ml,int dl, basic_ostream<char>& out) {
        out << "Name " << getName() << std::endl;
        out << "Boarding date " << "Day=" << getDayB() << " Month=" << getMonthB()+1 << " Year=" << getYearB()+1900 << std::endl;
        out << "Last date" << " Day=" << dl << " Month=" << ml << " Year=" << yl << std::endl;
        out << "DayLife=" << getAge(yl, ml, dl)<<" ";
 
    }

#include <iostream>
#include <fstream>
 
void printAll(std::basic_ostream<char>& out){
   out << "Text" << ' ' << 155 ; 
}
int main()
{
   printAll(std::cout);
   std::ofstream fout("test.txt");
   printAll(fout);
}