#include <stdio.h>

extern int var;
extern void (*func_ptr)();
extern void print_var();
extern void print_foo();
extern int foo;

typedef struct {
  int *var;
  void (*func_ptr)();

} TEST;

TEST xyz = { &var, print_var };


main()
{
  print_var();
  printf("we see var=%d\n",var);
  printf("setting var=456\n");
  var=456;
  print_var();
  printf("we see var=%d\n\n",var);

  var=90;
  print_var();
  printf("we see var=%d\n\n",var);

  print_foo();
  printf("we see foo=%d\n",foo);
  printf("setting foo=19\n");
  foo=19;
  print_foo();
  printf("we see foo=%d\n\n",foo);
	fflush(stdout);

  printf("Calling dllimported function pointer:\n");
  func_ptr();


  printf("Calling functions using global structure\n"); 
  xyz.func_ptr();
  *xyz.var = 40;
 xyz.func_ptr();


}