main.cpp

#include <iostream>

using namespace std;
struct nodeType{
    int data;
    nodeType *link;

};

int main()
{
    nodeType *head, *current, *newNode;
    head = NULL;
    newNode = new nodeType;

    //set data value of node pointed by newNode to value 4.
    cout << "Visual for myself to follow. " << endl;
    newNode->data = 4;
    cout << newNode->data << endl;

    //set link to point to NULL
    newNode->link = NULL;
    cout << newNode->link << endl;

    //point the pointer head and current to the node pointed by newNode
    head = newNode;
    current = newNode; // end of 1st node.

    //statement to print out value of 4 using the current pointer.
    cout << current->data << endl;

    //creating the 2nd node
    newNode = new nodeType;
    cout << "\n\nThis is the 2nd node. " << endl;
    newNode->data = 9;
    cout << newNode->data << endl;

    newNode->link = NULL;
    cout << newNode->link << endl;

    head->link = newNode;

    current->link = newNode;
    current = current->link;
    cout << current->data << endl; // end of 2nd node

    //3rd node
    newNode = new nodeType;
    cout << "\n\nThis is the 3rd node. " << endl;
    newNode->data = 1;
    cout << newNode->data << endl;
    newNode->link = NULL;
    cout << newNode->link << endl;
    current->link = newNode;
    current = current->link;

    head->link->link = newNode;

    cout << head->link->link->data << endl;
    //end of the 3rd node.

    //4th node
    newNode = new nodeType;
    cout << "\n\nThis is the 4th node. " << endl;
    newNode->data = 3;
    cout << newNode->data << endl;
    newNode->link = NULL;
    cout << newNode->link << endl;
    current->link = newNode;
    current = current->link;

    cout << current->data << endl;

    //reseting the current pointer

    current = head;
    cout << "\n\nThis will be a loop to traverse through my link-list. " << endl;
    while (current!= NULL)
    {
        cout << current->data << " ";
        current = current->link;
    }

    return 0;
}