[Missed Class] EGCO112 - LL-NODE

/* LL-NODE.h */

#ifndef NODE_h
#define NODE_h
#include<iostream>
using namespace std;

class NODE
{
    int id;
    string name;
    NODE* next;
public:
    NODE(int,string);
    void show_node();
    void insert(NODE*&);
    NODE* move_next();
    ~NODE();
};

#endif




/* LL-LL */

class LL
{
    NODE*hol;
    int size;
public:
    void add_node(NODE*&);
    void show_all();
    LL();
    ~LL();
};

/* LL-NODE.cpp */

#include"NODE.h"

NODE::NODE(int x,string n)
{
    id=x;
    name=n;
    next=NULL;
    cout<<"adding "<<x<<endl;
}
NODE:: ~NODE()
{
    cout<<"Node "<<id<<" is being deleted"<<endl;
}
NODE* NODE::move_next()
{
    return next;
}
void NODE::show_node()
{
    cout<<"Node data:"<<id<< " Name " <<name<< endl;
}
void NODE::insert(NODE*& x)
{
    x->next=this;
}

/* LL-LL.cpp */

#include"NODE.h"
#include"LL.h"
LL::LL()
{
    hol=NULL;
    size=0;
}

LL::~LL()
{
    NODE* tem;
    while(hol!=NULL){
        tem=hol->move_next();
        delete hol;
        hol=tem;
    }
}

void LL::show_all()
{
    NODE* t=hol;
    int i;
    for(i=0; i<size; i++)
    {
        t->show_node();
        t=t->move_next();
    }
}
void LL::add_node(NODE *&A)
{
    hol->insert(A);
    hol=A;

    size++;
}

/* LL-LLtest */

#include <iostream>
#include <cstdlib>
#include "NODE.h"
#include "LL.h"
using namespace std;

class student:public NODE
{
    double gpa;
public:
    student(int x,string n,double g):NODE(x,n)
    {
        gpa=g;
    }
    ~student();
};

int main(int argc, char *argv[])
{
    LL A;
    int i;
    NODE *t;

    for(i=1; i<argc; i+=3)
    {
        t = new student(atoi(argv[i]),argv[i+1],atof(argv[i+2]));
        A.add_node(t);
    }
    A.show_all();
    return 0;
}