pointerheap.cpp

来自「《24学时精通c++》的光盘内容」· C++ 代码 · 共 31 行

 // Listing 9.4
 // Allocating and deleting a pointer
 #include <iostream>
 
 int main()
 {
     int localVariable = 5;
     int * pLocal= &localVariable;
     int * pHeap = new int;
     if (pHeap == NULL)
     {
         std::cout << "Error! No memory for pHeap!!";
         return 1;
     }
     *pHeap = 7;
     std::cout << "localVariable: " << localVariable << "\n";
     std::cout << "*pLocal: " << *pLocal << "\n";
     std::cout << "*pHeap: " << *pHeap << "\n";
     delete pHeap;
     pHeap = new int;
     if (pHeap == NULL)
     {
         std::cout << "Error! No memory for pHeap!!";
         return 1;
     }
     *pHeap = 9;
     std::cout << "*pHeap: " << *pHeap << "\n";
     delete pHeap;
     return 0;
 }