Searching in unsorted linked list!

LinkedList.cpp

#include <iostream>

using namespace std;

class LinkedList
{
public:
    LinkedList()
    {
        start = NULL;
    }
    void add(int d)
    {
        Node* n = new Node;
        if(start == NULL)
        {
            start = n;
            n->next = NULL;
            n->data = d;
        }
        else
        {
            n->next = start;
            n->data = d;
            start = n;
        }
    }
    void display()
    {
        Node* ptr = start;

        while(ptr != NULL)
        {
            cout << ptr->data << endl;
            ptr = ptr->next;
        }
    }

    void search(int q)
    {
        Node* loc = NULL;
        Node* ptr = start;
        int c = 1;

        while(ptr != NULL)
        {
            if(q == ptr->data)
            {
                loc = ptr;
                break;
            }
            else
            {
                ptr = ptr->next;
                c++;
            }
        }

        if(loc == NULL)
        {
            cout << "Item not found" << endl;
        }
        else
        {
            loc = ptr;
            cout << "Item found at " << c << " and is located at " << loc << endl;
        }
    }
private:
    struct Node
    {
        int data;
        Node* next;
    };
    Node* start;
};

int main(int argc, char **argv)
{
    LinkedList a;

    a.add(20);
    a.add(22);
    a.add(24);
    a.add(26);
    a.add(28);
    a.add(30);
    a.add(32);
    a.add(34);
    a.add(35);

    a.search(26);

    a.display();

    system("pause");
    return 0;
}