#!/usr/bin/env /friends/bin/cscript
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

struct bar {
  int x;
  int y;
};

void show_ptr(const char *varname, void *ptr, const char *desc) {
  printf("%8s = %0.12p (%s)\n", varname, ptr, desc);
}

int foo0;
int foo1 = 123;
struct bar bar0 = {.x = 0, .y = 0};

void foo(void) {
  int foo2;
  int foo3 = 100;

  struct bar bar1;
  struct bar *bar2 = malloc(sizeof(struct bar));

  show_ptr("&foo0", &foo0, "data");
  show_ptr("&foo1", &foo1, "data");
  show_ptr("&foo2", &foo2, "stack");
  show_ptr("&foo3", &foo3, "stack");

  show_ptr("&bar0", &bar0, "data");
  show_ptr("&bar1", &bar1, "stack");
  show_ptr("bar2",  bar2,  "heap");
}

int main(int argc, char **argv) {
  printf("\n");
  foo();
  return 0;
}