#include<stdio.h>

int main()
{
   char s[] = "Hello World!";
   char *t = s;
   int *badptr = NULL; 

   // We set character pointer 't' to point to the start of
   //  statically-allocated string 's'.  This loop walks
   //  down the string, printing the value of the pointer,
   //  and three different representations of the byte
   //  pointed to.  Loop conveniently stops when we reach
   //  the null terminator, '\0'.
   do { 
       printf("(0x%08X): %c %3d 0x%X\n", t, *t, *t, *t);
      } while (*(t++) != 0);

   printf("\n\n");

   // Here is where things start to go wrong.  Badptr is for
   //  integers, not characters.  Because pointer arithmetic
   //  is scaled according to the size of the type pointed to,
   //  badptr will loop through memory 4 bytes at a time.
   badptr = (int *)s;

   // This loop interprets the harmless, peace-loving characters
   //  in our string as 32-bit integers, (on x86 processors,)
   //  and will not be stopped by the 8-bit null terminator
   //  character.
   // Don't try this at home, kids. 
   do {
       printf("(0x%08X): %12d 0x%08X\n", badptr, *badptr, *badptr);
      } while (*badptr++);
}