#include <iostream>
#include <vector>

using namespace std;

void objectPointers(){
  vector<int> *v = new vector<int>;
  cout << "Address: " << v << endl;

  for( int i = 0; i < 10; i++ ){
    (*v).push_back(i);
  }

  cout << "Address: " << v << endl;

  for( int i = 0; i < (*v).size(); i++ ){
    cout << (*v).at(i) << endl;
  } 
 
  cout << "Address: " << v << endl;
}

void objectPointersBetterApproach(){
  vector<int> *v = new vector<int>;

  for( int i = 0; i < 10; i++ ){
    v->push_back(i);
  }

  for( int i = 0; i < v->size(); i++ ){
    cout << v->at(i) << endl;
  }
}

void objectPointersBestApproach(){
  vector<int> *v = new vector<int>;

  for( int i = 0; i < 10; i++ ){
    v->push_back(i);
  }

  for( int i = 0; i < v->size(); i++ ){
    cout << v->at(i) << endl;
  }
  
  delete v;
}

void objectPointers2(){
  // pointer to vector, initially points to random location
  vector<int> *vPtr;
  
  // declare and initialize default vector object on stack
  vector<int> vec;

  // copies address of stack object into variable that holds addr
  vPtr = &vec;

  vPtr->push_back(10);
  vPtr->push_back(20);

  for( int i = 0; i < vec.size(); i++ ){
    cout << i << ": " << vec[i] << endl;
  }

  cout << "Address: " << vPtr << endl;
}


void precedence(){
  int x = 10;
  int *pX = &x;


  cout << "Address: " << pX << endl;
  cout << "x: " << x << endl;
  cout << "*pX: " << *pX << endl;

  (*pX)++;

  cout << "Address: " << pX << endl;
  cout << "x: " << x << endl;
  cout << "*pX: " << *pX << endl;

  *pX++;

  cout << "Address: " << pX << endl;
  cout << "x: " << x << endl;
  cout << "*pX: " << *pX << endl;

}

void fun() {
  int x = 10;
  int *pX = &x;

  cout << "pX: " << pX << endl;
  cout << "*pX: " << *pX << endl;
  cout << "&*pX: " << &*pX << endl;
  cout << "&pX: " << &pX << endl;
  cout << "*&pX: " << *&pX << endl;
  cout << "**&pX: " << **&pX << endl;
}

int main(){
  fun();
}