list0803.cpp

来自「teach yourself C++ in 21 days 第五版」· C++ 代码 · 共 40 行

// Listing 8.3 
// What is stored in a pointer.
#include <iostream>

int main()
{
   using namespace std;

   unsigned short int myAge = 5, yourAge = 10;

    // a pointer
   unsigned short int * pAge = &myAge; 

   cout << "myAge:\t" << myAge 
      <<  "\t\tyourAge:\t" << yourAge << endl;

   cout << "&myAge:\t" << &myAge 
      << "\t&yourAge:\t" << &yourAge << endl;

   cout << "pAge:\t" << pAge << endl;
   cout << "*pAge:\t" << *pAge << endl;

   
   cout << "\nReassigning: pAge = &yourAge...\n\n";
   pAge = &yourAge;       // reassign the pointer

   cout << "myAge:\t" << myAge <<  
      "\t\tyourAge:\t" << yourAge << endl;

   cout << "&myAge:\t" << &myAge 
      << "\t&yourAge:\t" << &yourAge << endl;

   cout << "pAge:\t" << pAge << endl;
   cout << "*pAge:\t" << *pAge << endl;
   
   cout << "\n&pAge:\t" << &pAge << endl;

   return 0;
}