DSA Pinnacle club

#include <iostream>
#include <cstdlib>
using namespace std;
class node
{
public:
string PRN;
string name;
node *next;
};
int count = 0;
node *temp, *temp1;
class pClub
{
node *head, *last;
public:
pClub();
void add();
void display();
void reverse();
void remove();
};
pClub::pClub()
{
head = NULL; last = NULL;
}
void pClub::display()
{
if(count == 0)
{
cout<<"Add members in the first place!"<<endl;
return;
}
cout<<"\n";
temp = head;
while(temp != NULL)
{
cout<<temp->name<<"\t"<<temp->PRN<<endl;
temp = temp->next;
}
}
void pClub::add()
{
if(head == NULL)
{
temp = new node;
cout<<"\nEnter PRN of President: ";
cin>>temp->PRN;
cout<<"\nEnter name of President: ";
cin>>temp->name;
temp->next = NULL;
head = temp;
temp = new node;
cout<<"\nEnter PRN of Secretary: ";
cin>>temp->PRN;
cout<<"\nEnter name of Secretary: ";
cin>>temp->name;
temp->next = NULL;
last = temp;
head->next = last;
count = 2;
}
else
{
temp1 = head;
while(temp1->next != last)
temp1 = temp1->next;
temp = new node;
cout<<"\nEnter PRN of member: ";
cin>>temp->PRN;
cout<<"\nEnter name of member: ";
cin>>temp->name;
temp->next = NULL;
temp1->next = temp;
temp->next = last;
count++;
}
cout<<"\nYour List of Members: "; display();
}
void pClub::reverse()
{
node *prev, *curr, *next1;
prev = NULL; curr = head;
while(curr!=NULL)
{
next1 = curr->next;
curr->next = prev;
prev = curr;
curr = next1;
}
head = prev;
cout<<"\nReversed List of Members: "; display();
}
void pClub::remove()
{
int ch, pos;
string data;
temp = head;
if(count == 0)
{
cout<<"Create a linked list first!"<<endl;
return;
}
cout<<"Enter the position of node you want to delete: ";
cin>>pos;
if(pos<0 || pos>count)
{
        cout<<"Invalid Entry"<<endl;
        return;
}
else if(pos == 1 || pos == count)
{
cout<<"You are supposed to delete the members, not the president or secretary"<<endl;
return;
}
else
{
for(int i=0; i<pos-2; i++)
temp = temp->next;
temp1 = temp->next;
temp->next = temp1->next;
delete(temp1);
count--;
}
cout<<"\nYour List of Members: "; display();
}
int main()
{
pClub P;
int ch;
while(1)
{
cout<<"\n1. Add Members"<<endl;
cout<<"2. Display Members"<<endl;
cout<<"3. No. of Members"<<endl;
cout<<"4. Delete Member"<<endl;
cout<<"5. Reverse List"<<endl;
cout<<"6. Exit"<<endl;
cout<<"Enter Choice: ";
cin>>ch;
switch(ch)
{
case 1: P.add(); break;
case 2: P.display(); break;
case 3: cout<<"Total no. of members: "<<count<<endl; break;
case 4: P.remove(); break;
case 5: P.reverse(); break;
case 6: exit(0); break;
default: cout<<"\nInvalid choice"; break;
}
}
return 0;
}