fig05_14.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 23 行

// Fig. 5.14: fig05_14.cpp
// Attempting to modify a constant pointer to
// constant data.
#include <iostream.h>

int main()
{
   int x = 5, y;

   const int *const ptr = &x; // ptr is a constant pointer to a
                              // constant integer. ptr always 
                              // points to the same location 
                              // and the integer at that 
                              // location cannot be modified.
   cout << *ptr << endl;
   *ptr = 7;
   ptr = &y;

   return 0;
}