RE: [Dev-C++] Question about pointers (beginner)

[Christian S. <sm...@xs...>]

I just executed this code:

#include <stdio.h>

main ( )
{
  int x, *ptr_int;

  *ptr_int = 456;

  printf ("The value of ptr_int is %p\n",ptr_int);
  printf ("The value of *ptr_int is %d\n",*ptr_int);

  x = 123;

  ptr_int = &x;

  printf ("The value of ptr_int is %p\n",ptr_int);
  printf ("The value of *ptr_int is %d\n",*ptr_int);
  printf ("The value of x is %d\n",x);
  printf ("The value of &x is %p\n",&x);

}

And it gives me as expected 123 for x. However I would expect an error or
something like that for the line: *ptr_int = 456;
as *ptr_int is not linked to any memory address at that time. Anyway maybe
it was a error in the book when they stated that the end result of x should
be 456 instead of 123 as I expected.