fig05_13.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 21 行

// Fig. 5.13: fig05_13.cpp
// Attempting to modify a constant pointer to
// non-constant data
#include <iostream.h>

int main()
{
   int x, y;

   int * const ptr = &x; // ptr is a constant pointer to an 
                         // integer. An integer can be modified
                         // through ptr, but ptr always points 
                         // to the same memory location.
   *ptr = 7;
   ptr = &y;

   return 0;
}