1 #include <stdio.h>
2
3 extern int var;
4 extern void (*func_ptr)(void);
5 extern void print_var (void);
6 extern void print_foo (void);
7 extern int foo;
8 extern int var2[2];
9
10 typedef struct
11 {
12 int * var;
13 void (* func_ptr)(void);
14 int * var_with_offset;
15 }
16 TEST;
17
18 TEST xyz = { & var, print_var, & var };
19
20 const TEST const_xyz = { & var, print_var, & var };
21
22 int
main(void)23 main (void)
24 {
25 print_var ();
26
27 printf ("We see var = %d\n", var);
28 printf ("Setting var = 456\n");
29
30 var = 456;
31
32 print_var ();
33 printf ("We see var = %d\n\n", var);
34
35 var = 90;
36 print_var ();
37 printf ("We see var = %d\n\n", var);
38
39 print_foo ();
40 printf ("We see foo = %d\n", foo);
41 printf ("Setting foo = 19\n");
42 foo = 19;
43 print_foo ();
44 printf ("We see foo = %d\n\n", foo);
45 fflush (stdout);
46
47 printf ("Calling dllimported function pointer\n");
48 func_ptr ();
49
50 printf ("Calling functions using global structure\n");
51 xyz.func_ptr ();
52 * xyz.var = 40;
53 xyz.func_ptr ();
54
55 printf ("We see var2[0] = %d\n\n", var2[0]);
56
57 printf ("We see const xyz %x %x\n", const_xyz.var, const_xyz.var_with_offset);
58
59 return 0;
60 }
61