#include <iostream>
#include <cstdio>
#include <cstring>
#include <cctype>
using namespace std;

struct  list{

    string name;
    string type;

      list  *node;

};

void dispaly(string& name){


    name[0]='L';
}


int main() {


    //line of string input
   // char input[100];
   // cin.getline(input,sizeof(input));



   int a=10;

   int *b; //pointer
   int  **dbl; //pointer pointing


   b = &a;

   dbl = &b;

   cout<<dbl<<endl;
   cout<<&b<<endl;

   cout<<**dbl<<endl;



   cout<<&a<<endl;

   cout<<*b<<endl;
   cout<<b<<endl;




}