pointer arithmatic

output.txt

a (value) = 42
a (addr)  = 80484B0FFCEBB78

incrementing...
a (value) = -3228804
a (addr)  = 80484B0FFCEBB7C

test.c

#include <stdio.h>
// note: assumes 64-bit system

int main(int argc, char** argv) {
  int v = 42;
  int* a = &v;

  printf("a (value) = %d\n", *a);
  printf("a (addr)  = %llX\n", a);

  printf("\nincrementing...\n");
  a++;

  printf("a (value) = %d\n", *a);
  printf("a (addr)  = %llX\n", a);
  return 0;

}