Mọi người cho e hỏi đoạn code này sai ở đâu ạ

e chạy đc mà nó cứ đến đoạn Lietke là dừng chương trình ạ , e cảm ơn .

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



 struct Dausach{
    string TenSach,TacGia,TheLoai;
    int SoTrang,NamSx ,ISBN;
};

 struct node{
    Dausach d;
    node *next;
};

struct List{
    
    node *First ;
    node *Last ;
};
 void KhoiTao(List & l){
     l.First =l.Last =NULL;
     
     
}    
 node * getNode(Dausach &ds ){
     node *p =new node ;
     if(p==NULL){
         return NULL ;
     }
     
     p->d=ds;
     p->next=NULL;
     return p ;
 }    




node * Search(List l, int x)
{
    for (node * p = l.First;  p  != NULL ; p=p->next )
              if ( p->d.ISBN == x  ) return p;
    return NULL;
}

void NhapDs (Dausach & ds)  {
    
    List l;
    node * p ;
    
                NhapLai:
                cout<<"Nhap ISBN :";
                cin>>ds.ISBN;
                if(ds.ISBN<=0){
                    cout <<"Ma ISBN khong hop le ! Xin nhap lai"<<endl ;
                    goto NhapLai ;
                }
                if(Search(l ,ds.ISBN)){
                    cout<<"Ma ISBN bi trung .Xin nhap lai !";
                    cout<<endl;
                    goto NhapLai ;
                }
                fflush (stdin);
                cout << "
Ten sach :" ;
                fflush (stdin);
                getline(cin,ds.TenSach);
                
                cout << "
Tac gia :" ;
                fflush (stdin);
                getline(cin,ds.TacGia);
                
                cout << "
The Loai :" ;
                fflush (stdin);
                getline(cin,ds.TheLoai);
                
                cout<<"
Nhap So Trang :";
                cin>>ds.SoTrang;
                
                cout<<"
Nhap Nam San Xuat :";
                cin>>ds.NamSx;        
                
                p = new node ;
                p->d = ds ; p->next=NULL;
            
            
              }
    
    
    


void LietKe (List l ) {
    
    node * r = l.First ;
    int dem =1 ; 
    
    if (r==NULL){
        cout<<"danh sach rong ! ";
    }
    else while(r!=NULL){
            cout<<"
 ------------------------------------------";
            cout<<"
 |        Sach thu: "<<dem ++<<"          |";
            cout<<"
 ------------------------------------------";

            cout<<"
 Ma ISBN : "<<r->d.ISBN ;
            cout<<"
 Ten Sach: "<<r->d.TenSach;
            cout<<"
 Tac Gia : "<<r->d.TacGia;
            cout<<"
 The Loai: "<<r->d.TheLoai;
            cout<<"
 SO Trang: "<<r->d.SoTrang;
            cout<<"
 Nam Xuat Ban: "<<r->d.NamSx;
        
            r=r->next;
            cout<<"
 ------------------------------------------";
    }
}

int Menu(){
    int c ;
    cout<<endl<<endl <<endl <<"       Chuc nang cua chuong trinh "<<endl;
    cout<<"      ----------------------------------------------------------------"<<endl;
    cout<<"      |     0 : Thoat.                                               |"<<endl;
    cout<<"      |     1 : Nhap doc gia.                                        |"<<endl;
    cout<<"      |     2 : Xuat danh sach doc gia .                             |"<<endl;
    cout<<"      |     3 : Nhap dau sach.                                       |"<<endl;
    cout<<"      |     4 : Xuat danh sach sach.                                 |"<<endl;
    cout<<"      |     5 : Tim Sach.                                            |"<<endl;
    cout<<"      |     6 : Muon sach.                                           |"<<endl;
    cout<<"      |     7 : Tra sach.                                            |"<<endl;
    cout<<"      |     8 : Danh sach sach doc gia dang muon.                    |"<<endl;
    cout<<"      |     9 : Danh sach doc gia muon sach qua han.                 |"<<endl;
    cout<<"      |     10: 10 cuon sach co nhieu nguoi muon nhat.               |"<<endl;
    cout<<"      ----------------------------------------------------------------"<<endl;
    cout<<"Ban chon : ";
    cin>>c;
    
    return c;
}
    
int  main() {
    
    List l ;
    Dausach ds;
    

    NhapDs (ds) ;
    
    LietKe(l);
    return 0 ;
}