HTML Node, C++ (gcc)

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/**
Samuel Ugochukwu Nwutobo
sammycageagle@gmail.com
23 July 2019
HTML Node
**/

#include <iostream>

struct Node
{
Node(std::string n) : id(n){}
std::string id;
Node* parent;
Node* next;
Node* prev;
Node* end;
};

Node *createElement(std::string id)
{
Node* e = new Node(id);
e->parent = e;

e->end = new Node(id + "-end");
e->end->parent = e;

e->end->prev = e;
e->end->next = e;

e->prev = e->end;
e->next = e->end;

return e;
}

void insertElement(Node *head, Node *tail, Node* target, int mode)
{
if(mode == 1)
{
 target = target->end;
 Node* targetPrev = target->prev;

targetPrev->next = head;
 head->prev = targetPrev;
 target->prev = tail;
 tail->next = target;
}
}

void appendElement(Node* e, Node* target)
{
insertElement(e, e->prev, target, 1);
}

int main()
{
Node* body = createElement("body");
Node* div1 = createElement("div1");
Node* div2 = createElement("div2");
Node* div3 = createElement("div3");
Node* div4 = createElement("div4");
Node* div5 = createElement("div5");

appendElement(div2, div1);
appendElement(div3, div5);
appendElement(div4, div5);
appendElement(div5, div1);
appendElement(div1, body);

Node* e = body->next;
while(e != body->end)
{
std::cout << e->id << std::endl;
e = e->next;
}
}

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Compilation time: 0.43 sec, absolute running time: 0.08 sec, cpu time: 0.02 sec, memory peak: 3 Mb, absolute service time: 0,51 sec