#include <iostream>
#include <fstream>
#include <string>
#include<stdlib.h>
using namespace std;

typedef struct ngay{
    int ngay, thang, nam;
}Date;

typedef struct sv{
    string hoten;
    string masv;
    Date date;
    float diem;
}Sv;

typedef struct node{
    Sv data;
    struct node *pnext;
}Node;

typedef struct list{
    Node *phead;
    Node *ptail;
}List;

void Khoitao(List &lt){
    lt.phead=NULL;
    lt.ptail=NULL;
}

Node *Taonode(Sv sv){
    Node *p = new Node;
    if(p==NULL){
        cout<<"\Khoi tao Node khong thanh cong!";
        return NULL;
    }
    p->data = sv;
    p->pnext = NULL;
    return p;
}

void Themdau(List &lt, Node, Node *p){
    if(lt.phead==NULL)
        lt.phead=lt.ptail=p;
    p->pnext = lt.phead;
    lt.phead = p;
}


void Themcuoi(List &lt, Node *p){
    if(lt.phead==NULL)
        lt.phead=lt.ptail=p;
    lt.ptail->pnext = p;
    lt.ptail = p;
}

void Docngaythangnam(ifstream &filein, Date &x){
    filein >> x.ngay;
    filein.seekg(1,ios_base::cur);
    filein >> x.thang;
    filein.seekg(1,ios_base::cur);
    filein >> x.nam;
}

void Docthongtin_1_Sv(ifstream &filein, Sv &sv){
    getline(filein,sv.hoten,',');
    filein.seekg(1,ios_base::cur);
    getline(filein,sv.masv,',');
    filein.seekg(1,ios_base::cur);
    Docngaythangnam(filein,sv.date);
    filein.seekg(1,ios_base::cur); // Kieu du lieu so bo bao nhieu byte k quan trong vi du bo 2 byte
    filein >> sv.diem;
}

void Xuatthongtin_1_Sv(Sv sv){
    cout<<"\nHo ten:"<<sv.hoten;
    cout<<"\nMa sinh vien:"<<sv.masv;
    cout<<"\nNgay sinh:"<<sv.date.ngay << "/" <<sv.date.thang <<"/" <<sv.date.nam;
    cout<<"\nDiem trung binh:"<<sv.diem;
}

void Docthongtin_nhieu_Sv(ifstream &filein, List &lt){
    while(filein.eof()==false){
        Sv sv;
        Docthongtin_1_Sv(filein,sv);
        Node *p = Taonode(sv);
        Themcuoi(lt,p);
    }
}

void Xuatthongtin_nhieu_Sv(List lt){
    int dem=1;
    for(Node *i=lt.phead;i!=NULL;i=i->pnext){
        cout<<"\Thong tin sinh vien thu "<<i++;
        Xuatthongtin_1_Sv(i->data);
    }
}

void Giaiphong(List &lt){
    for(Node *i=lt.phead->pnext;i!=NULL;i=i->pnext){
        delete i;
    }
    delete lt.phead;
}

int main()
{
    Sv sv;
    List lt;

    ifstream filein;
    filein.open("SINHVIEN.TXT",ios::in);
    //Docthongtin_1_Sv(filein,sv);
   // Xuatthongtin_1_Sv(sv);
    Khoitao(lt);
    Docthongtin_nhieu_Sv(filein,lt);
    Xuatthongtin_nhieu_Sv(lt);
    Giaiphong(lt);
    filein.close();
    return 0;
}