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#include <stdio.h>
extern int foo(void);
extern int bar(void);
extern int foobar(void);
extern int barbar(void);
extern int baz(void);
extern int tree_foo(void);
extern int tree_bar(void);
extern int tree_foobar(void);
extern int tree_baz(void);
int main()
{
printf("foo: %d bar: %d foobar: %d barbar: %d baz: %d\n", foo(), bar(),
foobar(), barbar(), baz());
printf("tree_foo: %d tree_bar: %d tree_foobar: %d tree_baz: %d\n",
tree_foo(), tree_bar(), tree_foobar(), tree_baz());
return 0;
}