fig08_12.cpp

来自「是有关C++编程原理教程的例子程序,全,应该对大家有所帮助」· C++ 代码 · 共 35 行

// Fig. 8.12: fig08_12.cpp
// Attempting to modify data through a 
// non-constant pointer to constant data.

void f( const int * ); // prototype

int main()
{
   int y;

   f( &y ); // f attempts illegal modification
   return 0; // indicates successful termination
} // end main

// xPtr cannot modify the value of constant variable to which it points
void f( const int *xPtr )
{
   *xPtr = 100; // error: cannot modify a const object
} // end function f

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