1 #include <stdio.h> 2 3 char bar[10]; 4 char foo[20] = { 1 } ; 5 extern int bar_size1 (void); 6 extern int bar_size2 (void); 7 extern int foo_size1 (void); 8 extern int foo_size2 (void); 9 10 int main()11main () 12 { 13 int size; 14 15 size = bar_size1 (); 16 if (size == sizeof (bar) && bar_size2 () == size) 17 printf ("OK\n"); 18 19 size = foo_size1 (); 20 if (size == sizeof (foo) && foo_size2 () == size) 21 printf ("OK\n"); 22 23 return 0; 24 } 25