Thread: printing memory at address..help!

>how can I print out the contents of the address with that number...
A better question would be, how do you know that the address is valid? But you could do it something like this:

Code:

#include <stdio.h>

int main ( ) {
  int i = 10;
  int j = 0x0012FF78;        /* Address of i on my box */
  int *pi = (int*)j;

  printf("%p\n", (void*)&i); /* Prints 0x0012FF78 */
  printf("%p\n", (void*)pi); /* Prints 0x0012FF78 */
  printf("%d\n", *pi);       /* Prints 10 */
  
  return 0;
}

>except it gives a bus error..
I'm shocked...no, not really. Like I said in my first post, how do you know that the address you're given is valid and accessable by your program? Just picking numbers out of the blue will give you a valid address enough times to count as dumb luck. And if the address you're trying to access is something that doesn't change (like video memory that you can write to), why bother entering it as a string to begin with? You can just as easily hard code the address.

>>the other function was being dumb...
Yeah, standard functions do that a lot. Oh no, wait a minute, that's users.

Maybe if you're having trouble you should post some code.