Implement linked list

#include<iostream>

using     namespace         std;

struct    node                   

{

                int           data;

                node*link;

};

class       list

{

               

node*start;

node*current,*temp;

public:

                list()

                {

                                start=    0;

                }

void       add(int d)

{

               

                if(start==0)

                {

                               

                                start=new           node;

                                start->data=d;

                                start->link=0;

                }

                else

                {

                                current=start;

               

                                while(current->link!=0)

                                current=current->link;

                                temp=new         node;

                                temp->data=d;

                                temp->link=0;

                                current->link=temp;

                }

}

void       show()

{

                node*temp;

                temp=start;

                cout<<"the_list_is_as_follows"<<endl;

                while(temp->link!=NULL)

                {

                               

                                cout<<temp->data<<" ->";

                               

                                temp=temp->link;

                               

                }

}

};

int           main()

{list         i;

                i.add(25);

                i.add(30);

                i.add(35);

                i.add(40);

                i.add(20);

                i.add(56);

                i.add(34);

                i.add(22);

                i.show();

                cout<<endl;

                return   0;

}