#include <iostream>
using namespace std;
 
int main() {
   int number = 88;    // Declare an int variable and assign an initial value
   int * pNumber;      // Declare a pointer variable pointing to an int (or int pointer)
   pNumber = &number;  // assign the address of the variable number to pointer pNumber
 
   cout << pNumber << endl;  // Print content of pNumber (0x22ccf0)
   cout << &number << endl;  // Print address of number (0x22ccf0)
   cout << *pNumber << endl; // Print value pointed to by pNumber (88)
   cout << number << endl;   // Print value of number (88)
 
   *pNumber = 99;            // Re-assign value pointed to by pNumber
   cout << pNumber << endl;  // Print content of pNumber (0x22ccf0)
   cout << &number << endl;  // Print address of number (0x22ccf0)
   cout << *pNumber << endl; // Print value pointed to by pNumber (99)
   cout << number << endl;   // Print value of number (99)
                             // The value of number changes via pointer
 
   cout << &pNumber << endl; // Print the address of pointer variable pNumber (0x22ccec)
}

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