char *gnu_getcwd(void);
int create_empty_file(const char *fname);
const char *get_home_directory(void);
-char *get_cwd();
+char *get_cwd(void);
bool same_executable_name(const char *s1, const char *s2);
size_t common_dir_prefix_length(const char *s1, const char *s2);
char *get_relative_path(const char *from, const char *to);
int cct_run(suite_fn *suites, int verbose);
void cct_suite_begin(const char *name);
-void cct_suite_end();
+void cct_suite_end(void);
void cct_test_begin(const char *name);
-void cct_test_end();
+void cct_test_end(void);
void cct_check_passed(const char *file, int line, const char *assertion);
void cct_check_failed(const char *file, int line, const char *assertion,
const char *expected, const char *actual);