fig05_12.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 24 行

// Fig. 5.12: fig05_12.cpp
// Attempting to modify data through a
// non-constant pointer to constant data.
#include <iostream.h>

void f( const int * );

int main()
{
   int y;

   f( &y );     // f attempts illegal modification

   return 0;
}

// In f, xPtr is a pointer to an integer constant
void f( const int *xPtr )
{
   *xPtr = 100;  // cannot modify a const object
}