header file

//specification file for the numberlist class

#ifndef NUMBERLIST_H
#define NUMBERLIST_H

class NumberList
{
private:
	//declares a structure for the list
	struct ListNode
	{
		double value; // value in the node
		struct ListNode *next; //to point to the next node 

	};

	ListNode *head; // list head pointer

public:
	// construcorr
	NumberList()
	{
		head = nullptr;
	}

	~NumberList();
	//linked list operations
	void appendNode(double);
	void insertNode(double);
	void deleteNode(double);
	void dispayList()const;


	

};



#endif

main cpp file

//this program demonstrates a simple append operation on a linked list
#include <iostream>
#include "NumberList.h"
using namespace std;

void NumberList::appendNode(double num)
	{
		ListNode *newNode;
		ListNode *nodePtr;

		//allocate a new node and store num there
		newNode = new ListNode;
		newNode->value = num;
		newNode->next = nullptr;
		//if there are no nodes in the listmake newNode first node
		if (!head)
			head = newNode;
		else // otherwise insert newNode at end
		{
			//initialize nodePtr to head of list
			nodePtr = head;
			//find the last node in the list
			while (nodePtr->next)
				nodePtr = nodePtr->next;
			// insert newNode as the last node
			nodePtr->next = newNode;

		}
	}


int main()
{
	//define a numberList object
	NumberList list;
	//append some values
	list.appendNode(2.5);
	list.appendNode(7.9);
	list.appendNode(12.6);


	system("pause");
	return 0;
}