oop

#include <iostream>
#include <cstdio>
#include <set>
#include <string>

using namespace std;

class Time_point{
public:
    string date, time;
    Time_point(string Date, string Time){
        date = Date;
        time = Time;
    }
    ~Time_point(){
        date.clear();
        time.clear();
    }
};

class My_list{
public:
    Time_point* cur;
    My_list* next;
    void set(My_list* cur){
        My_list* p = this;
        while(p->next)
            p = p->next;
        p->next = cur;
    }
    void get(string date, string time){
        My_list* p = this;
        while(p){
            if(p->cur->date == date && p->cur->time == time){
                cout << "found\n";
                return;
            }
            else
               p = p->next;
        }
        cout << "non-found\n";
    }
    void erase();
    void isEmpty(){
        if(!this)
            cout << "empty\n";
        else
            cout << "non-empty\n";
    }//?
    void print(){
        My_list* p = this;
        while(p){
            cout << p->cur->date << " " << p->cur->time << endl;
            p = p->next;
        }
    }
    My_list(Time_point* Cur){
        cur = Cur;
        next = NULL;
    }
    ~My_list(){
        while(next != NULL){
            delete next->cur;
            delete next;
        }
    } //?
};
 //correct date-time
int main(){
    int n; cin >> n;
    My_list *head = NULL;
    head->isEmpty();
    if(n--){
        string date, time;
        cin >> date >> time;
        head = new My_list(new Time_point(date, time));
    }
    //head->print();
    head->isEmpty();
    for(int i = 0; i < n; i++){
        string date, time;
        cin >> date >> time;
        My_list* new_element = new My_list(new Time_point(date, time));
        head->set(new_element);
    }
    head->print();
    head->isEmpty();

    system("pause");
    return 0;
}